DAC 25-1710 (REV. 28 JUL 2003) PROCESS … OF CONTENTS (Continued) Subject Page DPS 3.02 IDENTIFICATION OF PARTS AND ASSEMBLIES ii 4.13 Parts and Assemblies Purchased by Supplier’s

THE BOEING COMPANY PROPRIETARY RIGHTS ARE INCLUDED IN THE INFORMATION DISCLOSED HEREIN. RECIPIENT BY ACCEPTING THIS DOCUMENT AGREES THAT NEITHER THIS DOCUMENTNOR THE INFORMATION DISCLOSED HEREIN NOR ANY PART THEREOF SHALL BE REPRODUCED OR TRANSFERRED TO OTHER DOCUMENTS OR USED OR DISCLOSED TO OTHERS FORMANUFACTURING OR FOR ANY OTHER PURPOSE EXCEPT AS SPECIFICALLY AUTHORIZED IN WRITING BY THE BOEING COMPANY.UNPUBLISHED - CREATED ON PREPARATION DATE OF THIS DOCUMENT. ALL RIGHTS RESERVED UNDER THE COPYRIGHT LAWS BY THE BOEING COMPANY.

DAC 25-1710 (REV. 28 JUL 2003)

PROCESS ENGINEERING ORDER SHEET 1 OF 1 DPS 3.02THE BOEING COMPANY

LONG BEACH, CADATE 05-11-05 1 COMPLETE REVISION

BNLONG BEACH, CA

DATE 2 ADVANCE CHANGE

TITLE DATE 3 SERIALIZED CHANGE

IDENTIFICATION OF PARTS AND ASSEMBLIESDATE 4 NEW

DATE 5 REISSUE TO REVISE

HANDLING INSTRUCTIONS (HI):

2. COMPLY AT SPECIFIED EFFECTIVITY.3. COMPLY WHEN INVOKED BY DRAWING OR OTHER AUTHORITY.4. COMPLIANCE OPTIONAL; NO ENGRG. REQUIREMENT.5. NOTED.

RELEASE APPROVALS

PARA. MODELHI.NO. EFFECTIVITY

PEO MADE BY: DER COML - M&P

All Coml 2 On or before July 1, 2005J. Harpt MAFW 05-10-05

CUSTODIAN COML - M&P BACK-UP COML - M&P

J. Harpt 04-29-05 J. Robinson 04-29-05

GOVERNMENT - M&P GOVERNMENT - IPT

N/A N/A

DISTRIBUTION

STANDARDXSPECIALTY MANUAL NUMBERS

PRODUCT CONFIGURATION CONTROL

CLASS I CLASS IIX

M&P QCB NO.

4430LIMITED

CCN

D50R1N49EWO

N/AWRO

N/A

This PEO is authority to release DPS 3.02, Revision “BN”. This Revision replaces andincludes Revision “BM”.

♦ THIS DPS IS NOT APPLICABLE FOR C-17/GOVERNMENT/MILITARY USE ♦♦♦♦ REFER TO DPS 3.02-17 ♦♦♦

Summary of Change & Reason:

1.9 - Changed to remove the word “Production” from the paragraph heading.Reason: This identification process is applicable to production andnonproduction parts.

1.9.1 - Changed to add the word “conforming”.Reason: For clarity.

1.10.4 - Changed to delete last sentence that called for suffixes only being required forparts being delivered to the Long Beach Division.Reason: These suffixes apply to all parts, not only parts being delivered toLong Beach.

JAH:ah

TABLE OF CONTENTS

Subject Page

DPS 3.02IDENTIFICATION OF PARTS AND ASSEMBLIES

i

1. SCOPE 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.5 Nameplate Substitution 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.6 Planning Assigned Identification Systems 2. . . . . . . . . . . . . . . . . . . . . . .

1.6.1 Planning Variation Number 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.7 Acceptance Stamps 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.8 Supplemental Identification 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.9 Identification of Parts or Assemblies for Nonproduction Usage 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.10 Interim Part Numbers 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.10.11 Removal or Reidentification 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.10.12 Testing of Parts (Interim, Production and Nonproduction) at Supplier’s Facility or Subtier 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.11.1 Part 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.11.2 Subassembly 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.11.3 Assembly 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.11.4 Engineering Assembly 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.11.5 Planning Assembly 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.11.6 Planning Edition Number 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.11.7 Unit 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.11.8 Set 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.11.9 Acceptance Stamp 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.11.10 Factory Serial Number (FSN) 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.11.11 Serial Version Number Control (SVNC) 6. . . . . . . . . . . . . . . . . . . . . . . . .

1.11.12 Fuselage Number 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.11.13 Version Number 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. APPLICABLE DOCUMENTS 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. MATERIALS & SPECIAL EQUIPMENT 8. . . . . . . . . . . . . . . . . . . . . . . . .

4. REQUIREMENTS 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1 Parts and Assemblies 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1.1 Part Identification (see definition in paragraph 1.10) 9. . . . . . . . . . . . . .

4.1.2 Subassembly or Assembly Identification (See Definitions in Paragraph 1.11) 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1.3 Serial-Version Number Controlled (SVNC) Assembly Identification 13.

4.9 Permanent Identification 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.12 Parts and Assemblies Purchased to Long Beach Division Specification Control or Source Control Drawings 17. . . . . . . . . . . . . . . .

TABLE OF CONTENTS (Continued)

Subject Page

DPS 3.02IDENTIFICATION OF PARTS AND ASSEMBLIES

ii

4.13 Parts and Assemblies Purchased by Supplier’s Part Number, Industry Standards Drawings or LBD’s Standards Drawings 18. . . . . . .

4.13.1 Supplier’s Part Number or Industry’s Standards Drawing (e.g., AN, NAS, MS) 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.13.2 LBD’s Standards Drawings 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.14 Identification of Castings (Die, Sand, Permanent Mold and Investment) 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.14.1 Identification of Machined Complete Castings 19. . . . . . . . . . . . . . . . . . .

4.14.2 Identification of Castings Prior to Machining 20. . . . . . . . . . . . . . . . . . . . .

4.15 Identification of Rough Forgings 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.16.1 Definitions 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.16.2 Application Methods 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.17 Special Spare Parts or Assembly Requirements 21. . . . . . . . . . . . . . . . .

4.17.1 Code Letter “N” 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.17.2 Code Letters “SP” 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.17.2 Code Letter “Y” 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5. INSTRUCTIONS/PROCEDURES 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6. QUALITY CONFORMANCE/CONTROL PROVISIONS 25. . . . . . . . . . .

6.1 Process Control 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.2 Quality Control 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.3 Nonconformances 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IDENTIFICATION OF PARTS AND ASSEMBLIES

ISSUE OF 05-11-05REPLACES REVISION “BM”PAGE 1 OF 25

DPS 3.02REVISION “BN”

DOUGLAS PROCESS STANDARD

THE BOEING COMPANY

THE BOEING COMPANY PROPRIETARY RIGHTS ARE INCLUDED IN THE INFORMATION DISCLOSED HEREIN. RECIPIENT BY ACCEPTING THIS DOCUMENT AGREESTHAT NEITHER THIS DOCUMENT NOR THE INFORMATION DISCLOSED HEREIN NOR ANY PART THEREOF SHALL BE REPRODUCED OR TRANSFERRED TO OTHERDOCUMENTS OR USED OR DISCLOSED TO OTHERS FOR MANUFACTURING OR FOR ANY OTHER PURPOSE EXCEPT AS SPECIFICALLY AUTHORIZED IN WRITINGBY THE BOEING COMPANY.

UNPUBLISHED - CREATED ON PREPARATION DATE OF THIS DOCUMENT. ALL RIGHTSRESERVED UNDER THE COPYRIGHT LAWS BY THE BOEING COMPANY.

DAC 37-96A (REV. 15 AUG 2003)

THE BOEING COMPANY CODE IDENT. NO. 88277

1. SCOPE

1.1 This Process Standard covers part and assembly identification and markingrequirements and methods.

1.2 The requirements of this DPS are intended for identification after completionof all fabrication operations. Refer to applicable material specification (i.e. DMS,MIL-Spec, AMS, etc.) for required identification markings of extrusions, forgings andcastings prior to final machining. Temporary identification by means of appropriatetags is recommended when parts are separated from their planning paper, such asin heat treating or chemical processing operations or when permanent markings arenot required.

1.2.1 Tags or ties of metal are required to be of a metal in the same electro-chemical group (see DPS 4.025) as the metal of which the parts are fabricated.

1.2.2 The requirements of this DPS are not intended to change normal DesignEngineering and Planning operating practices unless specifically stated herein.Refer to the Boeing - Long Beach Division Drafting Manual for aircraft designconfiguration control.

1.2.3 DPS 3.02 will define the part and assembly identification methods unless aspecific alternate method of identification is specified on the Engineering drawing.

1.3 The requirements of this DPS do not apply to the following:

1.3.1 Electrical Wiring (except assemblies);

Commercial aircraft - See DPS 1.834-23Military aircraft - See DPS 3.231

1.3.2 Contract End Items (no next assembly drawing).

1.3.3 For government applications, refer to DPS 3.02-17.

1.3.4 For supplier packaging requirements, refer to DPS 3.301.

DPS 3.02Rev. “BN”Page 2 of 25

THE BOEING COMPANY - This information is subjectto data rights legends on title page or first page.

1.4 In addition to the requirements of this DPS, other DPSs specify identificationrequirements, markings, and methods for the following:

Bolts, Nuts and ScrewsFluid (Plumbing) LinesHeat TreatmentInspection OperationsNonproduction PartsRivetsRaw Stock MetalsRubber ProductsTitaniumTransparenciesWashersWeldingWiring AssembliesOther specific materials, parts, or assemblies

1.5 Nameplate Substitution - Where Engineering drawings specify nameplates to befabricated by the Graphotype machine process, photoetched nameplates fabricated perDPS 9.49 are acceptable.

1.6 Planning Assigned Identification Systems - Engineering assemblies, customerconfigurated by detail Finish Specification, and Planning assemblies may be identifiedwith numerical and/or alphabetical systems that do not necessarily correlate to anEngineering assembly drawing.

1.6.1 Planning Variation Number - A Planning synthetic number which may beassigned to various types of assembly planning documents when an assembly isstructured for a particular combination of engineering configurations.

NOTE: Planning variation numbers are developed and assigned by Planningand are not to be confused with an Engineering Variation Drawing number.(Reference paragraph 4.1.1.2.6.)

1.7 Acceptance Stamps - Parts and assemblies require an acceptance stamp,subject to appearance and size limitations of this DPS, when manufactured to anEngineering drawing or to a Specification Control or Source Control drawing. Theacceptance stamp is not a requirement on the following unless specifically required bythe planning paper or purchase order.

(a) Parts or assemblies with a supplier identification plate or label.(b) Supplier part numbered parts.(c) Industry standard drawings parts (e.g., AN, NAS, MS).(d) Standards drawings parts. (If raw metal standards are reidentified, refer

to DPS 3.54)



1.8 Supplemental Identification - In addition to the requirements of this DPS, partsand assemblies may require supplemental identification. Parts and assembliesmanufactured at the Long Beach Division must be identified with the supplementalidentification specified by that component of the Boeing Company for which parts aremanufactured. As an example, LBD Fabrication (C1) procedures now specify to placeForm No. 65-1307 on tagged parts which were dispositioned as “Use-as-is” or “Repair”.

1.9 Identification of Parts or Assemblies for Nonproduction Usage - Nonproductionusage of parts for Engineering Lab test, development, mockup, tooling, etc. shall behandled as follows:

1.9.1 Nonproduction usage which may not render a conforming production part unfitfor later production usage shall be identified by stenciling the letters “XC-” , 0.25 inchhigh, or as large as possible (whichever is less), as a prefix to the production part orassembly number using red solvent removable coating (DPM 5404-9324). Theseparts, as prefixed, are not to be used in flight.

EXAMPLES: XC-1234567-1orXC-ABC4567-1

Note: All parts shall be reviewed after usage by Engineeringto determine if nonproduction usage caused damage to thepart. If deemed acceptable, the prefix shall be removed.

1.9.2 Nonproduction usage of a nonproduction part shall be identified by stencilingthe letter “X-”, as a prefix to the nonproduction part or assembly number using rednonremovable coating (DMS 2433) per DPS 3.027 (Identification, Nonproduction Parts)to preclude the possibility of use as a production part or assembly. These parts are notto be used for any production requirement or installed on any aircraft.

EXAMPLES: X-1234567-1orX-ABC4567-1

1.9.2.1 Per DPS 3.027, the words “Not for Production Use” shall be applied whenpart size or configuration permits. A stripe shall be marked completely across the partwhen part size or configuration does not permit application of the words.

1.10 Interim Part Numbers - The requirements for interim part number identificationare defined in the Boeing - Long Beach Division Drafting Manual. Interim part numbersand methods of identification are listed as follows:

1.10.1 Interim part number suffixes are: ”Engineering Development Unit” (EDU),”Pre-Production Unit” (PPU), and ”Flight Test Unit” (FTU). The Long Beach DivisionDrafting Manual defines the parameters for when to use these interim part numbersuffixes.



1.10.2 Interim part number suffixes are used on LRU components. An LRU is acomponent which can be replaced by line personnel without any configurationalterations (i.e., no drilling, reaming, cutting, filing, shimming, etc.). Examples of LRU’sinclude, but are not limited to: Electronic boxes (with or without software), actuators,valves, motors, sensors, switches, transducers, control panels, etc.

1.10.3 Interim parts and their special part number identification are not applicable toparts that are primary structure (i.e., Principal Structural Elements (PSE’s), fuselage,wing, empennage, pylon, landing gear, etc.) or secondary structure (i.e., interior, radioracks, electrical power center, flight surfaces, cargo handling systems, doors, ducts,etc.).

1.10.4 Use of interim part number suffixes must be approved on Vendor InformationRequest (VIR) and authorizing Purchase Order (PO) or Purchase Order ChangeAuthorization (POCA).

NOTE: These suffixes are a LBD interim identification only, controlled by aLBD drawing and do not deviate or require a supplier drawing change.

1.10.4.1 Engineering Development Unit (EDU) - A blue identification label shall beused.

1.10.4.2 Pre-Production Unit (PPU) - A yellow identification label shall be used.

1.10.4.3 Flight Test Unit (FTU) - A red identification label shall be used.

1.10.5 EDU, PPU and FTU interim-identified parts must be replaced with aproduction part or be reidentified with a production part number prior to obtaining aCertificate of Airworthiness.

NOTE: EDU’s can not be reidentified and must be replaced.

1.10.6 The method of identifying interim part number suffixes, unless otherwisespecified on a VIR (as referenced in paragraph 1.10.8 ”NOTE”), shall be as follows: Atemporary label shall be affixed over the production part number and shall completelycover/obscure the part number.

1.10.7 The label will be of the appropriate background color, EDU - Blue, PPU - Yellow and FTU - Red, with black lettering.

1.10.8 The temporary label material and method of attaching it shall be such that itwill remain firmly affixed throughout handling, installation and testing. Clear mylar tape,such as DPM 895, may be placed over the label to enhance its fluid and abrasionresistance.

NOTE: Special ID instructions may be required due to environmentalexposure of the part (i.e., heat, oil, water, rubber and movable parts.). Theseinstructions shall be documented and approved on the VIR.



1.10.9 The label shall be removable without marring the ID of the part. It shallcontain the complete part number, appropriate suffix and serial number (whenapplicable). Example: LBD or Supplier Part Number (FTU condition shown).

SN - XYZXXXXXXX - XXX FTU

Label with appropriate background color(blue, yellow or red)

Suffix (EDU, PPU or FTU)

LBD or Supplier part number with dash & dashnumbers (as applicable) with black lettering

Serial number (when applicable)

1.10.10 When a supplier end item deliverable part, subassembly, assembly(Engineering or Planning) that contains a detail with an interim part number suffix, theend item delivered to LBD must be identified with ”IP (Interim Part) and PlanningDesignated number” as call for on the Planning Form 33-68, PO or POCA.

NOTE: When interim parts are shipped in a kit, the kit number must also carrythe ”IP and Planning Designated number” identification.

Example: Part ––––––––––– Sub Assembly –––––––––––– Assembly ––––––––––––––– Kit

XXXX-1 ”FTU” XXX-501 ”IP3” XXXX-901 ”IP3” XXXX-903 ”IP3”

Required per VIR Required whenend item

Required onend item

Only required whenend item is

shipped within a kit

1.10.11 Removal or Reidentification - Detail parts identified with an interim partnumber suffix will be removed or reidentified with the release of a ”Production Assist”drawing along with released planning AAO instructions for LBD in house parts and VIR,PO, RPO or POCA at the supplier (when applicable).

1.10.12 Testing of Parts (Interim, Production and Nonproduction) at Supplier’sFacility or Subtier

1.10.12.1 Supplier must identify any part that is used for test with a uniqueidentification as to not allow them to be commingled with other production parts.

NOTE: These parts do not require the use of LBD prefixes or suffixes if theyare not being delivered to LBD.

1.10.12.2 The supplier must have a documented process for the handling and useof this unique identification.



1.10.12.3 The supplier shall submit any tested part along with all test documents toLBD MRB Engineering and Supplier Quality prior to reentering the part into theproduction system.

1.11 To improve understanding of the requirements of this DPS, certain terms aredefined as follows:

1.11.1 Part - One piece, or two or more pieces joined together which are notnormally subject to disassembly without destruction. Exceptions are assembliescontaining Long Beach Division numbered parts which may be subject to changeactivity independent of the next assembly drawing and/or purchase parts.

1.11.2 Subassembly - Two or more parts which form a portion of an assembly or aunit replaceable as a whole, but having a part or parts which are individuallyreplaceable.

1.11.3 Assembly - A number of parts or subassemblies or any combination thereofjoined together to perform a specific function.

1.11.4 Engineering Assembly - An Engineering assembly is built exactly to anEngineering assembly drawing.

1.11.5 Planning Assembly - A planning assembly is not built exactly to anEngineering assembly drawing.

1.11.6 Planning Edition Number - A sequential change number assigned byProduction Planning to an assembly which identifies that a physical change caused byeither Engineering or Production Planning has been made affecting fit, form, orfunction.

1.11.7 Unit - An assembly or any combination of parts, subassemblies andassemblies mounted together, normally capable of independent operation in a variety ofsituations.

1.11.8 Set - A unit or units and necessary assemblies, subassemblies and partsconnected or associated together to perform an operational function. Also used todenote a collection of like parts such as a “tool set” or a “set” of tires.

1.11.9 Acceptance Stamp - An inspection stamp of LBD, other Boeing componentsor suppliers.

1.11.10 Factory Serial Number (FSN) - A permanent, unique number assigned toeach end item product manufactured by LBD for the purpose of customer andconfiguration identification. The FSN is independent of assembly line sequence.

1.11.11 Serial Version Number Control (SVNC) - A practice used in lieu of FactorySerial Number Control to manage traceability and accountability requirements fornonconfigurated assemblies. SVNC uses the supplier’s serial number in conjunctionwith a version number.

1.11.12 Fuselage Number - The chronological assignment and schedule that anaircraft is produced in sequence to other aircraft.

1.11.13 Version Number - A 3-digit number assigned by LBD Planning used toidentify physical changes to SVNC assemblies.



2. APPLICABLE DOCUMENTS

DPS 2.900 - Polyurethane and Nylon CoatingsDPS 3.021 - Bolt IdentificationDPS 3.027 - Identification, Nonproduction PartsDPS 3.27 - Marking Methods and MaterialsDPS 3.27-1 - Marking Methods and Materials, Ink StampingDPS 3.27-2 - Marking Methods and Materials, StencilingDPS 3.27-3 - Marking Methods and Materials, Metal Impression StampingDPS 3.27-4 - Electrochemical Etch-Marking of MetalsDPS 3.27-5 - Marking Methods and Materials, Marking by Vibratory ToolDPS 3.27-6 - Marking Methods and Materials, Electrical-Resistance Stylus

Marking

DPS 3.27-9 - Marking Methods and Materials, Chemical Etch-Marking ofMetals

DPS 3.301 - Supplier PackagingDPS 4.025 - Dissimilar Materials ProtectionDPS 4.813 - Processing Narrow-Strength-Range PartsMIL-STD-129 - Marking for Shipment and StorageMIL-STD-130 - Identification Marking of U.S. Military PropertyH4-1 - Cataloging Handbook (MM) Federal Supply Code for

Manufacturers, Name to Code

H4-2 - Cataloging Handbook (MM) Federal Supply Code forManufacturers, Code to Name

3. MATERIALS & SPECIAL EQUIPMENT

3.1 The materials and special equipment necessary to perform the requiredoperations of this DPS are listed in this section. The process materials and specialequipment have been categorized as Mandatory or Substitutable. The category ofSubstitutable applies to Suppliers [Subcontractors, Vendors, and The BoeingCompany components].



MATERIALS & SPECIAL EQUIPMENT - MANDATORY

The use of Boeing approved manufacturers’ products and special equipment listed in this section, andreferenced within the DPS, is mandatory.

When a government or industry specification is shown and a manufacturer’s product is listed, that product(or a Boeing approved alternative product) is mandatory. A DPM material having an approved alternativeproduct(s) is so noted with the Footnote (1).

When a government or industry specification is shown and no manufacturer’s product is listed, therequired material is one that is listed on the material specification QPL or one that meets the specificationrequirements, if no QPL exists.

Requests for substitution of mandatory materials or special equipment shall be submitted to The BoeingCompany for M&PE approval. The deviation request shall be prepared by the Supplier in the form of achange to the existing DPS using a Serial Process Engineering Order (SPEO), Form 25-1710.

DPMNUMBER

MATERIAL NAME &MANUFACTURER’S

DESIGNATIONMANUFACTURER’S

NAMESPECIFICATION

NUMBER

5404-9324 Coating, Solvent Removable,Red; AZ576

Aztec Chemical Co.El Monte, CA

-

- Coating, Epoxy Topcoat,Fluid Resistant; Gloss,Comp. A or C, DN 2150

- DMS 2433

MATERIALS & SPECIAL EQUIPMENT - SUBSTITUTABLE

Materials and special equipment listed in this section are used at The Boeing Company. Suppliers mayuse these materials and special equipment or substitute materials and special equipment which arefunctionally equivalent or superior. The substitute material or special equipment shall not degrade theprocess, part, or assembly, or material properties.

The specific substitutions shall be recorded in Supplier planning or process documentation.

DPMNUMBER

MATERIAL NAME &MANUFACTURER’S

DESIGNATIONMANUFACTURER’S

NAMESPECIFICATION

NUMBER

895 Tape, Adhesive, Mylar,Transparent

- L-T-100, Type 1

[The numbers assigned to Douglas Process Materials (DPM’s) are for internal company use. DPM’s areQPL’s for Boeing approved alternative products or sources.]

FOOTNOTES: (1) Contact the Boeing buyer for approved alternate products or sources that are listedin the Douglas Process Material (DPM) Index for Boeing use.



4. REQUIREMENTS

4.1 Parts and Assemblies - All parts, subassemblies and assemblies as specifiedon the purchase order or Long Beach Division inplant build paper shall be identified bymethods specified herein and as follows:

4.1.1 Part Identification (see definition in paragraph 1.10) - The part number andthe change letter of the latest EO affecting the part, or (N/C) where no change letterexists, shall be applied. The change letter shall be separated from the part number by aminimum distance of two times the distance between the spacing in the part number.

NOTES: (1) If the assembly EO does not affect the part, no revision letterchange is to be made.

(2) Parts identified as “NC” change will be considered equivalent to“N/C” unless otherwise proved by an Engineering Order. Thedesignation of N/C for drawings with no change letter wasestablished in Revision “BH’ change of this DPS in March of1999. If in doubt as to what the most recent letter change is,contact M&PE.

EXCEPTIONS: Identification is not required for:

(1) Details of a weld assembly that cannot be removed from the completedassembly. The weld assembly is considered to be one part.

(2) Bulk materials cut to fit at time of assembly (make and use) and notnormally replaceable after installation in the assembly.

(3) Parts and inseparable assemblies (including make and use) afterinstallation in an assembly not normally subject to disassembly or repair.

4.1.1.1 Example of Detail Part Identification and Markings - When size of partpermits, part identification shall be applied as follows:

Part NumberChange Letter(s)

5623478-23 AC4.1.1.2 Reidentification of Reworked Parts - When a part has been reworked with

an Engineering requirement for reidentification to a new production dash number,reidentification shall be accomplished by striking the dash number and change letterand affixing the new dash number and, if applicable, the new change letter just to theright of it as shown in the following examples:

1234567–3 B –7 or 1234567–3 B–7 C

NOTE: Rework accomplished on detail parts permanently assembled doesnot require reidentification of the detail part (unless permanent identificationof that detail is specifically required by Engineering drawing).



4.1.1.2.1 Rework Drawing - Where a part has been reworked to a rework drawing,the letter “R” and the rework drawing number shall be affixed directly above the existingpart number as shown in the following example:

R7654321

1234567-3 B

4.1.1.2.2 Serial EO (Applicable Drawing) - Where a part has been reworked to aSerial EO issued on the applicable drawing, the part need not be identified with theSerial EO number, except when coordinated salvage action is required at nextassembly or when specifically directed by the Serial EO. When reidentification isrequired, the letter “S” and the Serial EO number shall be applied directly above theexisting part number as shown in the following example:

Existing Part Number Drawing EO Revised Identification

1234567-3 B 1234567 “SEO 001” S0011234567-3 B 1234567 “SEO 001” S0011234567-3 B

NOTES: (1) Major subcontractors, assigned a source code letter forissuance of Serial Engineering Orders, shall apply theirassigned code letter between the “S” and the Serial EOnumber.

EXAMPLE: “SD601” indicates Serial EO #601 issued by Boeing - Toronto(formerly MDCAN).

(2) When a SEO No. includes a dash number, it shall appear onthe revised identification. (S001-1 over the existing partnumber).

4.1.1.2.3 Serial EO (Assembly Drawing) - Where a part has been reworked to aSerial EO issued on an assembly drawing, the assembly drawing number followed bythe letter “S” and the Serial EO number shall be affixed directly above the existing partnumber as shown in the following example:


1234567-3 B 5910007“SEO 001” 5910007 S0011234567-3 B

NOTES: (1) Major subcontractors, assigned a source code letter forissuance of Serial Engineering Orders, shall apply theirassigned code letter between the “S” and the Serial EOnumber.

EXAMPLE: “SD601” indicates Serial EO #601 issued by Boeing - Toronto.

(2) When a SEO No. includes a dash number, it shall appear onthe revised identification. (5910007 S001-1 over the existingpart number).



4.1.1.2.4 Change Letter EO (Applicable Drawing) - Where a part is reworked to achange letter EO issued on the applicable drawing, reidentification shall beaccomplished by striking the change letter and affixing the new change letter directlyabove it as shown in the following example:


1234567-3 B 1234567 EO “C” 1234567–3 BC

4.1.1.2.5 Change Letter EO (Assembly Drawing) - When existing parts arereworked to a change letter EO issued on an assembly drawing, the letter “R”, theassembly drawing number and the EO change letter shall be affixed immediately abovethe existing part number as shown in the following example:


R5910007 J

1234567-3 B 5910007 “J” 1234567-3 B

4.1.1.2.6 Variation Drawing (VD) - When existing parts are reworked to a variationdrawing, the variation drawing number and the change letter or N/C as applicable shallbe affixed directly above the existing part/assembly number as shown in the followingexample:

ProductionPart Number

Variation DrawingPart Number Revised Identification

ABC2468-501C VDA1234-3 N/C VDA1234-3 N/C

ABC2468-501 C

4.1.1.3 Interchangeable Parts - All parts identified as ’Interchangeable’ as called outby the Engineering drawing shall be marked ”Interchangeable Item - Do Not Alter” aftercompletion, per paragraph 4.8, using a character size of 1/8 inch or larger. Whenpainting or priming is specified for an interchangeable part prior to shipment, the stampshall be applied after paint.

4.1.2 Subassembly or Assembly Identification (See Definitions in Paragraph 1.11) -An assembly Identification Stamp (see example) that includes the following informationshall be applied to assemblies which are not Serial-Version Number Controlled (SVNC).See paragraph 4.1.3 for SVNC identification requirements.

4.1.2.1 Assembly Number:

(a) Engineering Assembly - Assembly drawing number and change letteror (N/C) where no change letter exists.

(b) Planning Assembly - A Planning assigned number. Examples are asillustrated in paragraphs 4.1.2.1.1, 4.1.2.1.2, and 4.1.2.1.3.



4.1.2.1.1 A drawing number segment and a planning assigned dash numbersegment:

Drawing Number Dash Number Planning AssemblyDrawing NumberSegment

Dash NumberSegment

Planning AssemblyNumber

1234567 -401 1234567-401

4.1.2.1.2 An assembly number segment and a variation number segment:

Drawing Number Dash Number Planning AssemblyDrawing NumberSegment

Dash NumberSegment

Planning AssemblyNumber

(TwinJet) 1234567-401 V-2 1234567-401V-2(MD-11) BN12-408 V-2 BN12-408V-2

NOTE: Variation numbers are to be included as part of the assemblyidentification, when applicable.

4.1.2.1.3 An assembly number segment and a Planning assigned edition numbersegment.

NOTE: Different Boeing components may identify details or assemblieswith edition numbers in different ways, as long as they are consistent withtheir internal planning procedures. The following are some examples.

Engineering Edition BoeingEngineeringAssembly Number

EditionNumber Assembly Number

BoeingComponent

1234567-12 AC 3 1234567-12 3AC LBD1234567-12 AC 3 1234567-12 AC-3 MDCAN

Planning Synthetic Edition BoeingPlanning SyntheticAssembly Number

EditionNumber Assembly Number

BoeingComponent

1234567-401 003 1234567-401 003 MDA-West, HB

4.1.2.2 Planning Edition Number (ED. No.) - Not required if identified with factoryserial number (FSN).

4.1.2.3 Factory Serial Number (FSN) - If production planning paper is so identifiedand controlled.

4.1.2.4 Example of Approved Assembly Identification Stamp

ASSEMBLY NO. ED. NO.FSN PROD. INSP.

NOTE: The stamp shape depicted in this example is dimensionless. Thespacing may be changed as necessary.



4.1.3 Serial-Version Number Controlled (SVNC) Assembly Identification - ASerial-Version Identification Stamp (see example in paragraph 4.1.3.6) that includes thefollowing information shall be applied:

4.1.3.1 Assembly Number - Same as paragraph 4.1.2.1.

4.1.3.2 Manufacturers Serial Number - An alpha-numeric identifier shall be used toindicate sequence of manufacture at a source.

4.1.3.3 Version Number - A 3-digit number assigned by LBD Planning shall be usedto identify physical changes to SVNC assemblies.

4.1.3.4 Supplier Inspection - Inspection stamp shall be applied by the manufacturerof the assembly.

4.1.3.5 Source/LBD Inspection - Acceptance stamp shall be applied by SourceInspection or delegated Quality Assurance representative.

4.1.3.6 Example of Approved Serial-Version Controlled Identification Stamp

Assembly No.Mfr. Serial No.Version No.Supplier InspectSource / LBD Insp.

NOTE: The stamp shape depicted in this example is dimensionless. Thespacing may be changed as necessary.

4.1.3.7 Assemblies with serial version number identification shall not have a factoryserial number or fuselage number on any part of the assembly identification placard ornameplate.

4.1.4 When size or shape of marking area precludes use of the AssemblyIdentification Stamp, omit the stamp but the required markings shall be applied to theassembly.

4.1.5 Supplier requirement for use of the Assembly Identification Stamp is limited toLong Beach Division design purchased assemblies.

4.1.6 Subcontractors may use their own planning configuration controlidentification, in lieu of the Long Beach Division edition number, for assemblies whichhave aircraft factory serial number identity or those same assemblies built as spares.

4.1.7 Assemblies to be shipped as spares shall also be identified with the changeletter or (N/C) where no change letter exists. The change letter shall be separated fromthe assembly number by a minimum of 1/8 inch.

4.2 On purchase, manufacture, and on issue from any stockroom, the followingparts or assemblies do not require individual identification but shall be identified bytagging or marking each package: (For supplier packaging requirements, refer toDPS 3.301)

4.2.1 Items where a complete part number cannot be applied directly to a surface ofthe part or assembly.



4.2.2 Items that are mass produced (any size), such as screws, nuts, bolts,washers, clips, and shims.

4.2.3 Items that are exempt from individual identification do not require a partnumber when installed in an assembly.

4.3 When a suitable marking area of a part is too small to accommodate (a), (b),and (c) as defined below, identify the part by tagging with all the applicable informationas in paragraph 1.2. If the part marking area can accommodate (a), (b) and (c) butcannot fit (d) through (m) as required, the parts shall be identified with as many of theapplicable markings as possible and in the following order of importance. Theremainder of the markings shall be placed on an attaching tag as in paragraph 1.2.

(a) Part Number and Change Letter (or N/C)

(b) Planning Edition Number or Version Number (for subassemblies andassemblies only)

(c) Acceptance Stamp and Date

(d) Proof Load

(e) Heat Treat Identification*

(f) Hardness*

(g) Magnaflux*

(h) Fluorescent Penetrant*

(i) X-Ray*

(j) Ultrasonic*

(k) Baked (Embrittlement Relief)*

(l) Passivate*

(m) Electropolish*

*Stamps that have been obliterated by operations such as plating, painting,etc., need not be reapplied but may be verified by an acceptance stamp anddate.

4.4 All marking shall be clearly legible.

4.5 Characters which are at least 1/16 inch high shall be used on the surface of apart or assembly. Space permitting, always use characters large enough to be easilyobserved on the part or assembly. Normally, rubber stamp characters are 3/16 inchhigh or larger.

4.6 Markings shall be located on detail parts and assemblies so they will be visibleafter assembly and installation, when practical.

4.6.1 If an after installation operation (i.e., painting) hides or obliterates the detailpart or assembly marking, or if the installation operation itself renders the identificationto be no longer visible; reidentification of the detail part or assembly marking is notrequired unless permanent identification is specifically required by the Engineeringdrawing.



4.6.2 Marking of aluminum-lithium detail parts shall be accomplished perDPS 3.27-1 after completion of surface treatment and paint operations with the symbol“AL-Li.” The marking shall be 3/8 inch high or larger and be located as close to the partnumber as legibly feasible. All Fabrication Orders (FO) shall be identified with the“AL-Li” symbol.

4.7 Identification markings shall be applied directly onto the surface of the part orassembly providing sufficient and suitable surface area is available. The following shallnot be marked:

4.7.1 Any surface which will ultimately be exposed as an exterior skin surface or asan interior appearance surface in the passenger or crew compartment.

4.7.2 A surface which is precision machined or polished.

4.7.3 Any surface which has been dry film lubricated.

4.8 Part numbers, change letters, and other markings shall be applied on thesurfaces of parts and assemblies by the method specified on the Engineering drawingor by ink stamping per DPS 3.27-1 subject to ink stamping restrictions perparagraph 4.18. In lieu of ink stamping on metallic surfaces, it is acceptable to stencilper DPS 3.27-2 and coat per DPS 2.900, Type 2 or 4.Where ink stamping is prohibited,use another dash numbered marking method of DPS 3.27 subject to the restrictions ofparagraph 4.18 through paragraph 4.21.

4.8.1 When parts call for Trim-On-Assembly (TOA), part number identification shallbe located within the final trimmed part.

4.9 Permanent Identification - When the Engineering drawing specifies “permanentidentification” and the area for identification is shown, a character size of 1/8 inch orlarger shall be used and the identification shall be applied per the following method:

4.9.1 Electrochemical deep etch, per DPS 3.27-4, the part number, including itsdash number and other drawing identification, except the change letter or (N/C).Identify with the detail part number unless the drawing specifically states: “PermanentlyIdentify Assembly Per DPS 3.02.”

4.9.2 Ink stamp per DPS 3.27-1, the change letter or (N/C).

NOTE: When permanently identified parts require reidentification as inparagraph 4.1.1.2, the electrochemical etch method shall not be used to “X”out the previous identification. Remove mechanically per the Engineeringdrawing specified fabrication DPS.

4.10 When identifying a machined casting or forging, the raised number thatidentified the raw casting or forging need not be ground off unless specified by theEngineering drawing.

4.11 When Engineering drawings, applicable to Military aircraft and/or relatedequipment, require a nameplate or specify “Activity Code Identification Required,” theassigned code number of the Design Activity shall be included. In addition, wheneverthe item is to be manufactured at other than the Design Activity, the assigned CodeNumber of the Manufacturing Activity, or manufacturer’s name, or manufacturer’sregistered trademark shall be incorporated by that manufacturer.



4.11.1 Code Number Assignment - Refer to Military Cataloging Handbooks H4-1and H4-2, Federal Supply Code for Manufacturers for assignment of code numbers,such as:

Company Name Code NumberBoeing - Long Beach Division 88277

4.11.2 Application of Codes - The following examples are intended only to indicatethe relationship of the required code numbers and notations to the part number. Theexamples do not authorize deletion of other requirements specified in this DPS.

4.11.2.1 Parts

Design Activity Code Number and a Dash (–)

Part NumberChange Letter(s)

XXXXX–1234567–12 AC

MFR XXXXX

The notation “MFR” and the manufacturer’s code number, ormanufacturer’s name, or registered trademark when manufactured at other than the Design activity.

4.11.2.2 Assemblies Without Nameplates

Design Activity Code Number and the Notation “ASSY”

Assembly NumberChange Letter(s)

XXXXXASSY–1234567–501 AC

MFR XXXXX

The notation “MFR” and the manufacturer’s code number, ormanufacturer’s name, or registered trademark when manufactured at other than the Design activity.



4.11.2.3 Nameplate Assemblies - Include the code numbers in the appropriateblocks of the nameplate:

Design Activity Code Number and a Dash (–)Assembly Number

Change Letter(s)

XXXXX–1234567–501 AC

MFR XXXXX

Manufacturer’s code number, or manufacturer’s name,or registered trademark when manufacturedat other than the Design activity.

PART NO.

NOTES: (1) Identification and modification (AN7510) plates do not providea block for the manufacturer’s code number. Include themanufacturer ’s code number on the bottom of the plate:

MFR XXXXX

The notation “MFR” and the manufacturer’s code number, ormanufacturer’s name, or registered trademark.

(2) A planning-400 series number is not to be used in lieu of theEngineering number when the Engineering drawing specifiesthe use of nameplates and serial identification.

4.12 Parts and Assemblies Purchased to Long Beach Division Specification Controlor Source Control Drawings - They shall be identified to the requirements of theapplicable control drawings and any special requirements noted on the purchase order.A marking method shall be used that will provide legible marks as permanent as thenormal life expectancy of the item marked without adverse effect on its life and utility.



4.13 Parts and Assemblies Purchased by Supplier’s Part Number, IndustryStandards Drawings or LBD’s Standards Drawings

4.13.1 Supplier’s Part Number or Industry’s Standards Drawing (e.g., AN, NAS, MS)- The end article shall be identified with the applicable part number that is specified onthe LBD purchase order and a supplier serial number, if applicable. A marking methodshall be used that will provide a legible mark that is as permanent as the normal lifeexpectancy of the item marked, without any adverse effects on its life and utility. Partsand assemblies that do not have sufficient and suitable surface to mark must beadequately identified on attached tags or on unit containers that are used for packaging(see paragraphs 4.2 and 4.3)

4.13.2 LBD’s Standards Drawings - There are different identification requirementsfor each type of LBD Standard drawing and these requirements are in the followingsubparagraphs. The marking method used to identify the item shall provide a legiblemark that is as permanent as the normal life expectancy of the item marked, withoutany adverse effects on its life and utility. The LBD Standard drawing number shall bespecified on the LBD purchase order.

4.13.2.1 Type “S” - Type “S” series Standard drawing numbers are characterized bySxxxxxxx. These items shall be individually identified with the LBD Standard drawingpart number per the requirements of the applicable LBD Standard drawing. If space islimited on the item, identify per the requirements of paragraphs 4.2 and 4.3. Revision orchange letter(s) to the LBD Standard is not required to be applied, unless otherwisespecified on the LBD Standard drawing. Other markings shall be applied as requiredby the applicable material specification (i.e., DMS, MIL-SPEC, AMS, etc.).

4.13.2.2 Type “D” - Type “D” series Standard drawing numbers are characterized byxDxxxx.

4.13.2.2.1 Items that are vendor designed with an approved vendor’s partdesignation listed on the LBD Standard drawing source sheet shall be identified asfollows:

(a) The item shall be individually identified with the approved vendor’spart designation and the CAGE or FSCM per MIL-STD-130.Company name or logo is acceptable in lieu of the CAGE or FSCMidentification. If space is limited on the item, identify per therequirements of paragraph 4.2. Apply logo to item if possible.

(b) The “D” series approved number and the approved vendor’s partdesignation shall be applied to the items unit package and theshipping container per MIL-STD-129. Revision letter(s) to the LBDStandard drawing is not required as part of the marking, unlessotherwise specified on the LBD Standard drawing.

NOTE: The approved vendor’s part designation, CAGE or FSCM, nameor logo, and the “D” - series approved number callout are listed on the lastsheet of the applicable LBD Standard drawing (i.e., source sheet).

4.13.2.2.2 Items that are designed by LBD and have approved vendor’s partdesignation listed on the LBD Standard drawing source sheet shall be identified perparagraph 4.13.2.2.1.



4.13.2.2.3 Items that are designed by LBD and have no approved vendor’s partdesignation listed on the LBD Standards drawing source sheet shall be identified asfollows:

(a) The item shall be individually marked with the “D” series approvednumber per MIL-STD-130. If space is limited on the item, identify perthe requirements of paragraph 4.2.

(b) The “D” series approved number shall be applied to the items unitpackage and the shipping container per MIL-STD-129. Revisionletter(s) to the LBD Standards drawing are not required as part of themarking, unless otherwise specified on the LBD Standard drawing.

NOTE: The “D” series approved number callout is listed on the last sheetof the applicable LBD Standards drawing (i.e., source sheet).

4.14 Identification of Castings (Die, Sand, Permanent Mold and Investment)

4.14.1 Identification of Machined Complete Castings - Castings shall be identified inraised letters unless otherwise specified on drawing. When foundry casting methodprevents use of raised letters, ink stamping per DPS 3.27-1 may be substituted unlessotherwise specified on the Engineering drawing. Castings which are too small to beidentified on the part surface shall be individually bagged and tagged per paragraph4.3. The change letter may be ink stamped even when identification by raised letters isspecified (see limitation of paragraph 4.18.5). Other markings shall be applied asrequired by the Engineering drawing or applicable DMS or DPS. Identification shall belocated in area specified on Engineering drawing or, when not specified, it shall belocated in an area of no machining according to best pattern practice and must consistof the following:

4.14.1.1 The part number, as indicated on drawing.

4.14.1.2 The Engineering drawing change letter that affects the casting blank (or“N/C” where no change exists).

4.14.1.3 The cavity number. Where part identification is by ink stamping, the cavitynumber is not required except for first article inspection.

EXAMPLE: 5713457-1 D 1Part Number Eng. Change Ltr. Cavity #



4.14.2 Identification of Castings Prior to Machining - Identify to the applicablematerial specification. (i.e. DMS, MIL-SPEC, AMS, etc.), for identification requirementsusing the methods specified in paragraph 4.14.1

NOTE: Identify the lot numbers specifically (Lot #______) in order to avoidconfusion with other identification markings.

4.15 Identification of Rough Forgings - For machined complete forgings, parts shallbe identified as specified on the Engineering drawing. When not specified, eitherembossing or ink stamp shall be used. Forgings which are too small to be identified onthe part surface shall be individually bagged and tagged per paragraph 4.3. Thechange letter may be ink stamped even when identification by embossing is specified(see limitation of paragraph 4.18.5). The part number shall be located as specified onthe Engineering drawing. When not specified, location is optional. Identification contentshall consist of the part number as indicated on the Engineering drawing, and thechange letter that affects the forging blank or “N/C” where no change letter exists shallbe specified. Other markings shall be applied as required by the Engineering drawingor applicable DMS or DPS.

NOTE: For identification of forgings prior to machining, identify per theapplicable material specification (i.e. DMS, MIL-SPEC, AMS, etc.) usingthe identification methods specified herein. Identify the lot numberspecifically (Lot #________) in order to avoid confusion with otheridentification.

4.16 When the Engineering drawing or procurement specification specifies anameplate and/or source coding or serialization the source code and serial numbersshall be applied as follows:

4.16.1 Definitions

4.16.1.1 Source Code - A five-digit numeric identifier established in CatalogingHandbook H4-1 and H4-2, Federal Supply Code for Manufacturers, assigned toestablishments which are manufacturers or have design control of items of supplyprocured by agencies of the federal government, used by Long Beach Division (LBD) toindicate the source of manufacture.

NOTE: When a supplier has not been assigned an FSCM, LBD shall assigna five-digit alphanumeric number (DXXXX) for use as a source code untilsuch time as an FSCM is assigned. Examples of an FSCM code is:

88277 - Long Beach Division



4.16.1.2 Serial Number - A one or more digit numeral to indicate sequence ofmanufacture at a source:

4.16.1.2.1 The first end item manufactured by a source, whether basic part numberor dash number, must be assigned the serial number “1”.

4.16.1.2.2 Subsequent end items must be numbered consecutively even though thedash number changes. End items reworked to new dash numbers shall retain theoriginal serial number. However, new dash numbered end items must be listed on anew page of the serial number permanent record.

4.16.1.2.3 Once assigned, a serial number must not be changed or duplicated eventhough the end item is lost or scrapped, however:

4.16.1.2.3.1 A destroyed or obliterated name plate must be replaced with a newname plate using the identical serial number. The original manufacturer must furnishthe duplicate name plate or authorize the fabrication of the replacement.

4.16.1.2.3.2 When serialized and recorded end items are reworked into new basicpart number configurations, a new serial number series must be assigned. The oldserial number permanent record must be revised to reflect change to new serialnumbers.

4.16.2 Application Methods - The choice of application methods of the sourcecode-serial numbers to the nameplate depends on time of application as follows:

4.16.2.1 Before Nameplate Installation - The information shall be applied byimpression stamping, engraving or electrochemical etching.

4.16.2.2 After Nameplate Installation - The information shall be engraved orelectrochemical etched (do not impression stamp).

NOTE: The source code may be a part of the nameplate design (asmanufactured, such as colored anodic or etched.

4.16.2.3 Maintain a permanent record of serial numbers in conjunction with theiruse shall be maintained.

4.17 Special Spare Parts or Assembly Requirements - When the part numberspecified on the purchase order or Boeing - Long Beach Division inplant build paperincludes special code letters, part number identification of spare parts, subassemblies,and assemblies must include these letters as an integral part of the number or dashnumber. The spacing between the code letters and the part number shall be no greaterthan the distance between the individual numerals of the part number to preventconfusion with Engineering change letters. The use of these specific codes in no waychanges the requirement for the use of Engineering change letters. No codes otherthan those specified in the subsequent paragraphs shall be used in this manner.



4.17.1 Code Letter “N” - The letter “N” appearing immediately after the last digit of apart number signifies that the part is ordered, manufactured, and sold in a “Noted”condition representing a variation from drawing requirements until all current supply isexhausted. Future deviations from drawing requirements for undrilled parts (a part withpilot holes omitted at the attaching fastener locations) will be identified as follows:

EXAMPLE:

Production Part to be Replaced

Former ”Noted” Spare Part to be Replaced

Spare Part Identical to Production or ”Noted” Partexcept without Pilot Holes

ARB7732-115 ARB7732-115N ARB7732U115

5912188-41 5912188-41N 5912188U41

9954664-12 9954664-12N 9954664U12

NOTE: Spare and retrofit parts designed and manufactured by Boeing without pilotholes will be identified by use of a (U) in place of the dash (-) in the dash numberportion of a Boeing production part number. ”U” designates an undrilled spare part (a part with pilot holes omitted at the attaching fastener locations). Other deviationsfrom drawing requirements [the addition of ”trim on assembly” (TOA) material, inclusionof bag and tie items, etc.] will also be supplied until current supply is exhausted. Futureprocurement of parts requiring a deviation (other than undrilled parts) from theEngineering drawing will be covered under a new drawing number (SK or SS ref: Drafting Manual Section F, Page F-5.4), which will eliminate the need forparts identified as ”noted condition” parts.

4.17.2 Code Letters “SP” - The code letters “SP” appearing immediately after thelast digit of a part number shall signify a customer’s specification item which includesdetail finish specification requirements on materials, finishes, colors, etc.

4.17.3 Code Letter “Y” - The code letter “Y” appearing in place of the dash (-) in thedash number portion of a Boeing production part number shall designate an interimconfiguration/deviation. Refer to drawing SE10000000 for “Y” definitions. For otherdeviations not covered by SE10000000, Spares M.E. and Spares Engineering shall becoordinated with for the creation of “SE” part number or “SE/SS” drawing.

NOTE: The “Y” designation eliminates the need for parts identified as “notedcondition” parts.

EXAMPLE:

ARB7732Y115

5912188Y41

9954664Y12

4.18 Identification by the ink stamping method per DPS 3.27-1 is prohibited on:

4.18.1 Surfaces of parts and assemblies that, in service, will be in direct contactwith liquid or gaseous oxygen.



4.18.2 Surfaces subject to high temperatures which would destroy ink marks wherepermanent markings are required.

4.18.3 Surfaces subject to contact with fluids which would dissolve or otherwisedestroy ink marks where permanent markings are required.

4.18.4 Surfaces which would be damaged by the ink or surfaces to which ink willnot adhere.

4.18.5 Surfaces of castings, forgings, or composite parts, where the surfaceroughness would impair the legibility.

4.19 In general, identification by metal impression stamping, including use of “SteelControlled Stamps,” is forbidden on all Long Beach Division designed aircraft parts andassemblies, even though specified on the Engineering drawing. Parts shall not beimpression stamped until the following has been evaluated. Where there is any doubtas to applicability, contact the Metallurgical Group of Materials & Process Engineeringfor disposition.

4.19.1 For DC-9 and subsequent commercial aircraft and all Naval aircraft,impression stamping per DPS 3.27-3 is permitted on the following:

(a) Ballistics deflector plate.

(b) G.F.A.E., proprietary purchased parts, and other parts of supplier design.

(c) Nameplates - before installation.

(d) Control cable terminals - proof load stamp only.

(e) Special bolts per DPS 3.021 or DPS 4.813.

(f) When the Engineering drawing specifically states: “Impression StampOnly - No Other Marking Method Permitted” and the area on the part tobe marked is shown on the drawing.

(g) Nonairborne parts, e.g., ground support equipment.

(h) Hand forgings, before machining.

4.19.2 For DC-8 and previous commercial aircraft models and for C-133 andprevious Military aircraft models, impression stamping per DPS 3.27-3 is prohibited onthe following:

4.19.2.1 Notch-sensitive materials, including:

(a) 2XXX and 7XXX alloys in all tempers and in all applications, excepthand forgings before machining.

(b) 1100, 3003, 5052 and 6061 aluminum alloys, when end use is a fluidtank.

(c) Magnesium alloys.

(d) Case-hardened or nitrided steel.

(e) Steel of specified heat treatment of 180,000 psi tensile strength orhigher.

(f) Titanium alloys.



(g) Plastics (EXCEPTION: Vibratory tool marking is acceptable onplastics other than acrylics, polysulfone and polycarbonate.)

4.19.2.2 All sheet, strip, or extrusions less than 0.032 inch in thickness.

4.19.2.3 All tubing.

4.19.2.4 Parts and assemblies in engine mount structures.

4.19.2.5 Parts and assemblies after plating or chemical surface treatment(anodized, etc.)

4.20 Identification by electrochemical etch marking per DPS 3.27-4 and chemicaletch marking per DPS 3.27-9 shall be prohibited on:

4.20.1 Steel heat treated in excess of 200,000 psi, except hydraulic valve lapassemblies and parts requiring “permanent” identification (see paragraph 4.9).

4.20.2 Metals which will be chemically surface treated, plated or painted, unlessactual trial indicates the marks will be legible after the final finish is applied.

EXCEPTION: Electrochemical deep etch is permitted when the Engineeringdrawing specifically states: “Electrochemical Deep Etch Only - No OtherMarking Method Permitted” and the area on the part to be marked is shownon the drawing.

4.21 Identification by vibratory tool marking per DPS 3.27-5 and electricalresistance stylus marking per DPS 3.27-6 is prohibited on:

4.21.1 Notch sensitive materials, including:

(a) 2XXX and 7XXX aluminum alloys in all tempers and in all applications.

(b) 1100, 3003, 5052 and 6061 aluminum alloys, when end use is a fluidtank.

(c) Magnesium alloys.

(d) Case-Hardened or nitrided steel.

(e) Steel of specified heat treatment of 180,000 psi tensile strength orhigher.

(f) Titanium alloys.

(g) Plastics of acrylic, polysulfone and polycarbonate.

(h) Composite materials (organic).

4.21.2 All sheet, strip or extrusions less than 0.032 inches in thickness.

4.21.3 All tubing.

4.21.4 Parts and assemblies in engine mount structures.



4.21.5 Parts and assemblies after plating or chemical surface treatment(anodized, etc.).

EXCEPTION: Vibratory tool marking is permitted when the Engineeringdrawing specifically states: “Vibratory Tool Mark Only - No Other MarkingMethod Permitted” and the area on the part to be marked is shown on thedrawing.

5. INSTRUCTIONS/PROCEDURES

This Section not applicable.

6. QUALITY CONFORMANCE/CONTROL PROVISIONS

6.1 Process Control - Provide surveillance as necessary to determine compliancewith this DPS and other applicable Engineering requirements.

6.2 Quality Control - Verification of compliance to the following may be performedby Quality Assurance or by the organization doing the work:

6.2.1 All marking is clearly legible.

6.2.2 Identification markings are applied directly onto the surface of the part orassembly providing sufficient and suitable surface area is available.

6.2.3 Castings are identified in accordance with paragraph 4.10, and 4.14 of thisDPS.

6.2.4 Rough forgings are identified in accordance with paragraph 4.15 of this DPS.

6.2.5 Special spare parts or assemblies are identified with code letters inaccordance with the requirements of paragraph 4.17 of this DPS.

6.3 Nonconformances - Process nonconformances in accordance with standardpractice.

JAH:ah

Documents

DAC 25-1710 (REV. 28 JUL 2003) PROCESS … OF CONTENTS (Continued) Subject Page DPS 3.02 IDENTIFICATION OF PARTS AND ASSEMBLIES ii 4.13 Parts and Assemblies Purchased by Supplier’s