INTRODUCTION - DESCRIPTION AND OPERATION 1. General

NOTE:The Electrical Standard Practices data related to Power Plant is shown in the AMM 70-71-XX.

NOTE:There are several Chapter 20, depending on the vendor responsible for the system (ECE, Honeywell, etc.) but whatever the vendor, their chapter 20 follows the same layout.

The Electrical Standard Practices Manual (ESPM) gives descriptive data and procedures for the electrical installations on all aircraft of the AIRBUS family. The standard practices information in this manual tells you how to do maintenance and repairs on the standard electrical items. This information is broken down in two main chapters:

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Chapter 00 (common part) with: - General, How to use (00-INTRO) - Indexes

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Chapter 20 with: - Safety Practices (20-10-00) - Tools (20-25-XX) - Subjects related to standard rules and recommendations (20-3X-XX): Specific areas (20-31-XX) Identification/marking (20-32-XX) Wire harnesses (20-33-XX) - Subjects related to standard electrical items and connecting parts with their description (P/N identification and characteristics) and their related processes (connection procedure or connection table) (20-4X-XX): Sleeves, End Caps and Ferrules (20-42-XX) Splices and Pressure Seals (20-43-XX) Connectors and Terminal Blocks (20-44-XX) Miscellaneous Electrical Items (20-45-XX) Circuit breaker, Relay and Relay Base (20-46-XX) Terminals and Contacts (20-48-XX) - Subjects related to maintenance processes (20-5X-XX): Standard Processes (20-51-XX) Inspection/Check and Test (20-52-XX) Repair Processes (20-53-XX) Protection during Maintenance Checks (20-54-XX) Cleaning (20-55-XX) If any part or all of the ESPM is translated, the official version is the original English-language version produced by AIRBUS.

2. Correspondence Correspondence concerning this publication should be directed to: AIRBUS SAS Technical Data Support and Services 1 Rond Point Maurice BELLONTE 31707 Blagnac Cedex FRANCE Or by the "Request for Information/Revision" form. 3. Definitions

A. Definition of Terms The terms below are used in the ESPM and are defined as follows:

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Standard Practices: Standard industry practices that are not specific to AIRBUS aircraft. Procedures specific to AIRBUS aircraft and applicable to several systems.

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Torque: Term used when a procedure requires a specific torque value.

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Tighten: Term used when no specific torque value is required.

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WARNING: Calls attention to use of materials, processes, methods, procedures or limits that you must obey precisely to prevent injury or death to persons.

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CAUTION: Calls attention to methods and procedures that you must obey to prevent damage to equipment.

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NOTE: Calls attention to methods which make the job easier or give supplementary or explanatory information.

B. Part Number (P/N) Construction It is only with a P/N (not with a FIN) that you can access to the ESPM information. The P/Ns listed in the ESPM are made up of two parts: - A basic element which is the standard number/family. - A suffix which defines the item. e.g. Basic element (standard) + suffix(item) = Full P/N NSA936504 TC0607 NSA936504TC0607 ASNE0261 CF24 E0261CF24

NOTE:For ASNE standards, the 3 letters "A, S, N" are omitted in the P/N.

For clarity, only the suffix (item) (e.g. E0617 for ASNE0617) is shown in the tables.

However, you can identify the full P/N because the applicable standard number is always shown on the page. (In the title or/and on top of the table)

NOTE:For tool military part number (MIL), the P/N consists of the letter M and of the basic specification number.

e.g.: M 81969 / 01-01 - ----- -- -- | | | | | | | ----- Dash number from specification sheet | | -------- Specification sheet number | -------------- General specification number ------------------ "M" Military part number indicator 4. Units of Measurement A. Abbreviations AIRBUS Technical Publications use the metric and non-metric systems of measurement. The system used in the original reference documents is shown first, followed by the conversion into the other system in brackets. ------------------------------------------------------------------------------- | U.S. CUSTOMARY SYSTEM | SI-METRIC MEASUREMENT SYSTEM | |------------------------------------|----------------------------------------| | ABBREVIATION | DEFINITION |ABBREVIATION | DEFINITION |

|---------------|--------------------|-------------|--------------------------| | deg.F | Degrees Fahrenheit | deg.C | Degrees Celsius | | ft. | Foot | m | Meter | | USgal | US Gallon | l | Liter | | USquart | US Quart | l | Liter | | in. | Inch | mm | Millimeter | | in.2 | Square Inch | mm2 | Square Millimeter | | in.2 | Square Inch | cm2 | Square Centimeter | | lb | Pound | kg | Kilogram | | lbf | Pound force | daN | Deca Newton | | lbf.in. | Pound Force-Inch | m.daN | Meter deca Newton | | | (Torque) | | | | lbf.ft | Pound Force-Foot | m.daN | Meter deca Newton | | | (Torque) | | | | in.Hg | Inch of Mercury | hPa | Hecto Pascal | | oz | Ounce (Weight) | g | Gram | | psi | Pound Square Inch | bar | Bar | | lb.min | Pound per minute | kg.min | Kilogram per minute | | USgal.min | US Gallon per | l.min | Liter per minute | | | | W/dm2 | Watt per square decimeter| | | | cc | Cubic Centimeter | ------------------------------------------------------------------------------- B. Conversion Tables Temperature conversion from degrees Celsius (deg.C) to degrees Fahrenheit (deg.F): deg.F = 1.8 x deg.C + 32. ------------------------------------------------------------------------------- FROM: S.I.Measurement System TO: US Customary System ------------------------------------------------------------------------------- 1 bar = 14.5037 psi 1 mm2 = 0.0016 in.2 1 cm2 = 0.1550 in.2 1 daN = 2.2481 lbf 1 g = 0.0353 oz

1 hPa = 0.0295 in.Hg 1 kg = 2.2046 lb 1 kg.min = 2.2046 lb.min 1 l = 0.2641 USgal 1 l = 1.057 USquart 1 l.min = 0.2641 USgal.min 1 m.daN = 88.4956 lbf.in 1 m.daN = 7.3801 lbf.ft 1 m = 3.2809 ft 1 mm = 0.0394 in 1 cm3 = 0.06102 in3 1 hPa = 0.0145 psi ---------------------------------------------------------------------------- ----------------------------------------------------------------------------- FROM: US Customary System TO: S.I.Measurement System ----------------------------------------------------------------------------- 1 psi = 0.0689 bar 1 in.2 = 645.1600 mm2 1 in.2 = 6.4516 cm2 1 lbf = 0.4448 daN 1 oz = 28.3495 g 1 in.Hg = 33.8640 hPa 1 lb = 0.4536 kg 1 lb.min = 0.4536 kg min 1 USgal = 3.7854 l 1 USgal.min = 3.7854 l.min 1 USquart = 0.9464 l 1 lbf.in = 0.0113 m.daN 1 lbf.ft = 0.1356 m.daN 1 ft = 0.3048 m 1 in = 25.4 mm 1 in3 = 16.3871 cm3 1 in.Hg = 0.491 psi ----------------------------------------------------------------------------- Temperature conversion from degrees Fahrenheit (deg.F) to degrees Celsius (deg.C): deg.C = 0.5555 x (deg.F - 32) 5. Glossary of Abbreviations used in the ESPM

ABBREVIATION SIGNIFICATION

A Amber

A Alternate

A/C Aircraft

AC Alternating current

ADF Automatic Direction Finder

AECMA The European Association of Aerospace Industries

Ag Silver

AINS Aircraft Information Network System

Al Aluminum

APU Auxiliary Power Unit

ARINC Aeronautical Radio INCorporated

ARPT Airport

ASCII American Standard Code for Information Interchange

ASM Aircraft Schematics Manual

ASSY Assembly

ATA Air Transport Association of America

ATC Air Traffic Control

ATE Automatic Test Equipment

ATLAS Abbreviated Test Language for All Systems

AUTO Automatic

AUX Auxiliary

AVAIL Available

AVNCS Avionics

AWM Aircraft Wiring Manual

AWY Airway

B AWY Blue

BK Black

BR Brown

BUS Busbar

C Close

C Clear

C Celsius

C Centigrade

C/B Circuit Breaker

C/L Check List

CAB Cabin

CINS Cabin Information Network System

CO Carbon Dioxide

COM Communication

COMSAT Communication Satellite

CSK Countersinks

Cu Copper

Cw Clockwise

DC Direct Current

D/O Description and Operation

DIA Diameter

DME Distance Measuring Equipment

DNC Do not Connect

EFCS Electrical Flight Control System

ELEC Electric, Electrical, Electricity

ELT Emergency Locator Transmitter

EMC Electromagnetic Compatibility

ES Spain

ETFE Ethylene-Tetrafluorethylene

EU Europe

EQPT Equipment

EWIS Electrical Wiring Interconnection System

F Fahrenheit

FEP Perfluorethylenepropylene

FIG Figure

FIN Functional Item Number

FR France

FWD Forward

G Green

GB Great Britain

GND Ground

GPS Global Positioning System

GY Grey

H Hot (Electrical Point)

HF High Frequency

IDENT Identification, Identifier, Identify

IDG Integrated Drive Generator

IPC Illustrated Parts Catalog

ISO International Standardization Organization

ISOL Isolated

IT Italy

L Length

L/G Landing gear

LED Light Emitting Diode

LOC Localizer

MAG Magnetic

MAINT Maintenance

MAN Manual

MAX Maximum

MED Medium

MID Middle

MIL Military Standard

MIN Minimum

MISC Miscellaneous

MLS Microwave Landing System

MS Military Standard

NAS Navy and Army Standard

NAS National Aerospace Standard

Ni Nickel

NiAl Alumel

NiCu Chromel

NL Netherland

No Number

O Orange

OK Correct

OPT Optional

ABBREVIATION SIGNIFICATION

P Purple

PA Polyamide

P/B Pushbutton

P/BSW Pushbutton Switch

PCB Print Circuit Board (idem LRM)

PE Polyethylene

PFA Perfluoroalkoxy-Copolymere

PI Polyimide

PK Pink

P/N Part Number

PTFE Polytetrafluorethylene

PVC Polyvinylchloride

R Red

RCPT Receptacle

REF Reference

RF Radio Frequency

RFI Radio Frequency Interference

RH Right

S Sensitive (or Safety)

SATCOM Satellite Communication

SHLD Shield

SI Silicone

Sn Tin

SPCW Silver plated copperweld

St Steel

STD Standard

SW Switch

TACS Taxiing Aid Camera System

TCAS Traffic Alert and Collision

Avoidance System

TEMP Temperature

TFTS Terrestrial Flight Telephone System

TX Transmission (TCAS to transponder)

UHF Ultra High Frequency

US United States

V Violet

VHF Very High Frequency

VM Voltmeter

VOR VHF Omnidirectional Range

UV Ultraviolet

W Weight

W White

WARN Warning

XL-ETFE Cross linked Ethylene-Tetrafluorethylene

Y Yellow

6. Effectivity The effectivity of a page is given in the effectivity (Selected effectivity) statement in the top right hand corner of the page. For the ESPM, this effectivity is alwais 'ALL' because ESPM is a generic manual.Thus, the effectivity statement of each page is ALL. 7. Revision Service A. General The revision service is on a six-month basis. You can acces to ESPM data in the digital format products that follow:

- AirNav/Maintenace (DVD)

- AirNav/Associated data (DVD)

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SGML The Temporary Revision (TR) service to the ESPM is issued as necessary to alert the customer on a major technical data change and give temporary instructions before the next regular revision. Each temporary revision will be usually incorporated into the ESPM

in the next regular revision. B. Filing Instructions

There are no filing instructions with AirNav because the manual is not page- oriented. - Highlights (HL) are shown at the front of ESPM (and not at chapter level), and give a list of chapters or illustrations which have been modified at the revision. C. Revision Indication In the current revision of ESPM, the revision changes are identified by a yellow background on the screen to highlight the changes between two revisions. D. Temporary Revisions (TR) For AirNav/Maintenance or AirNav Associated Data, the revisions are given in digital format via Airbus world and in CD format. You must load these TRs as soon as you received them. However only the temporary revision deleted by the highlights of a normal revision must be removed. IMPORTANT: - Do not remove a Temporary Revision unless instructed to do so by: - The Highlights of a Normal Revision. Or - A new Temporary Revision superseding the previous one. 8. Interfaces with other manuals:

- The Standards Manual (SM) and the Illustrated Parts Catalog (IPC): These manuals help the user find characteristics and complementary information (Supplier, equivalent P/N) for the required P/N.

- The Additional Cross Reference Tables (ACRT): The purpose of this manual which supplements the IPC is to: - Give the list of Optional PNs (Part number) and Vendors. - Facilitate cross-reference of data contained in the IPC and the other A/C manufacturer manuals such as the WDM and AMM. - List raw materials required for local manufacture of items. - Give identification for lamps and fuses. - Give information related to the interchangeability condition of the PNs. (ICD: Interchangeability Condition Document)

- The Process and Material Specification (PMS): This manual helps the user prepare shop processes.

- The Aircraft Wiring List (AWL): This manual gives the status of the items of equipment, semi-equipment and related wiring. It gives the P/N related to a given FIN and the cable type for a given cable number.

- The Aircraft Wiring Manual (AWM): This manual gives wiring diagrams of the electrical installations.

- The Aircraft Schematics Manual (ASM): This manual gives schematic diagrams of the electrical installations with sufficient data for aircraft fault isolation.

- The Aircraft Maintenance Manual (AMM): This manual contains the information required to service, repair, replace, adjust, do an inspection and check of equipment and systems of the aircraft normally done on the ramp or in the maintenance hangar.

- Component Maintenance Manual Vendor or Manufacturer (CMMV or CMMM): Information related to equipment on the aircraft is contained in these manuals.

- The Trouble Shooting Manual (TSM) This manual gives information required for trouble shooting.

NOTE:When the customer adds an item on the aircraft, he will give it a number from 9000 to 9999.

Example: Repair of the cables.

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A FIN in the 9XXXVS series will identify the splice. (For example 9001VS for the first splice that the customer installs on the aircraft)

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The customer will install a sleeve on each side of the splice with the 9XXXVS series number printed on it, in accordance with the splice FIN.

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The customer will raise a Customer Originated Change (COC) to include the identified VS in the WDM. (AWM/ASM/AWL)

9. How To Use: This part of the ESPM gives the user basic information on how to use the manual efficiently. A. Manual Structure

(1) Preliminary pages at the beginning of the ESPM (a) Record of Revisions This record gives the ESPM revision numbers and issue dates and is updated by the operator. (b) Highlights (HL) The Highlights give the reason for revision changes. (c) List of Temporary Revisions This is the list of the temporary revisions (related to all chapters) which must be removed from the manual or which still stay effective. (2) Preliminary pages at the beginning of each chapter (a) Table of Contents (TOC) Each chapter in the ESPM begins with a Table of Contents. The Table of Contents shows each section in the chapter and the subject material within the section. (b) Record of Temporary Revision (ROTR) The ROTR is not available on DVD and is superseded by the TR list paragraph, located in the Manual Front Matter (3) Manual Breakdown Chapter breakdown is based on a 6-digit numbering system. Each chapter (XX) is broken down into sections (XX-Y). Each section (XX-Y) is broken down into subsections (XX-YY). Each subsection (XX-YY) is broken down into subjects and sub-subjects (XX-YY-NZ). B. How to get access to the information? The entry points below help you find the information you need: (1) The Table of Contents (TOC) This part gives a list of the topics contained in the chapter and the title of a subject covered in each topic. (2) The alphabetical index (CHAPTER 00 - INDEXES) This part gives an alphabetical list of keywords and tells you which topics contain these keywords. (3) The standard P/N index (CHAPTER 00 - INDEXES) The standard P/N indexes (one for each family of standard P/Ns) tell you which topics contain data related to the P/N. (4) The equivalence tables (CHAPTER 00 - INDEXES)

NOTE: The ESPM does not cover all the electrical P/Ns, e.g.: old generation P/Ns that are no longer used for repair and P/Ns that are not frequently used, are not covered.

For P/Ns not covered in the ESPM, you can refer to the Standards Manual (SM) which gives the specification of the standard P/N or an equivalent P/N you can use. You can then refer back to the ESPM for information related to that equivalent P/N given in the SM.

C. Presentation Of Each Chapter (1) 20-42-XX: Sleeves and Ferrules

(Ref. Fig. 001) (Ref. Fig. 002) (Ref. Fig. 003) The selection is done according to: - The type of terminal on which the sleeve is installed. - The type and gauge of the cable. (2) 20-43-1X: Splices (Ref. Fig. 004) (Ref. Fig. 005) (Ref. Fig. 006) (Ref. Fig. 007) The selection is done according to the type of cable to which the splice is to be connected. Use the splice allocation table (Ref. 20-53-29) to select the splice for cable repair purposes.

NOTE:When splices are added on cables, we recommend to start a COC procedure to update the related wiring diagram. (WDM)

(3) 20-44-XX: Connectors (Ref. Fig. 008) (Ref. Fig. 009) (Ref. Fig. 010) (Ref. Fig. 011) (Ref. Fig. 012) (Ref. Fig. 013) (Ref. Fig. 014) (Ref. Fig. 015) (Ref. Fig. 016) (Ref. Fig. 017) (Ref. Fig. 018) The search for connectors generally comes from the need to repair, replace or install a connector. Therefore, at least the FIN is known and you can retrieve the related P/N with the help of the IPC or AWL. This chapter helps the user define the characteristics of the required connector, its contacts and the related connection procedure. (a) In Aircraft On Ground (AOG) situation If a spare connector is not available, it can be possible to temporarily use the unused cavities of the damaged connector if AIRBUS agrees. You must contact AIRBUS to get a written agreement to use the unused cavities. AIRBUS will make an analysis of:

- Compliance with the applicable electrical segregation rules. - The condition of the connector and type of damage. - The general environnement of the connector. - The status of the unused cavities of the specific aircraft. (There is no EO or STC that uses

these cavities) If you think that the damage can have an effect on the integrity of the connector, you must not use the unused cavities. This modification of the connector writing must have the agreement of AIRBUS and can only be temporary. AIRBUS will specify the limitation time for each change.

(4) 20-44-5X: Terminal Blocks (Ref. Fig. 019) (Ref. Fig. 020) (Ref. Fig. 021) (Ref. Fig. 022) (Ref. Fig. 023)

For the selection of terminal block P/Ns, do as for the connectors, but you must do the allocation of terminals in relation to the type of cable and the type of equipment, and obey, in addition, the terminal stacking rules. (Ref. 20-51-40) (5) 20-46-5X: Relays and Relay Bases (Ref. Fig. 024) (Ref. Fig. 025) (Ref. Fig. 026) For the selection of relay P/Ns, do as for the connectors. The only difference is to know if the relay is connected with or without a relay base. (6) 20-53-XX: Repair Processes (Ref. Fig. 027) (Ref. Fig. 028) (Ref. Fig. 029) (Ref. Fig. 030) (Ref. Fig. 031) (Ref. Fig. 032) (Ref. Fig. 033) The selection is in relation to: - The type. - The P/N. - The gauge of the cable. A repair method is proposed in relation to the damage found. These chapters give repair processes: 20-53-2X Electrical Cable Repair Processes 20-53-3X Conduit Repair Processes 20-53-4X Bundles Attachments Repair Processes 20-53-5X Standard Electrical Item Repair Processes (7) Other topics: Find the full P/N (Ref. Fig. 034) (Ref. Fig. 035) Sometimes the full P/N is not written on the electrical standard item (for example, for a cable only the cable type is shown), but for procurement the full P/N is necessary. You can find the full P/N in the other manuals (AWL, IPC, etc.) but for a cable it is necessary to refer to 20-32-21 to reconstitute the ful P/N.