I recently had a call from an engineer in the field concerning lowengine oil pressure indication on an Arriel 1D1. After the first start ofthe day, the pilot called the engineer over to show that the engine oilpressure gauge was indicating low oil pressure and also that the enginelow oil pressure light was illuminated. The engineer on site instructedthe pilot to shut down immediately.

All engineers who work on the AS 350 are very familiar with theunreliability of both the engine oil pressure gauge (quad pack) and thetransmitter itself due to the high failure rate of both units. But in this

I N S I D E T H I S I S S U E

1 Arriel Oil Filter Assembly

2 205 External Fuel Filter Housing

3 ADs/ASBs and Tech Docs

4 Chicken Wings

4 Technical Recurrent Training Certification Form

5 Safety Report System Activity

5 Transport Canada Civil Aviation – Program Validation Inspection or PVI

6 Bird Strikes

“VIH – Pride in Service Since 1955.”

May, 2012 Volume 4 Issue 5

Rotorwash

Arriel Oil Filter Assembly

case, since both engine oil pressure indicating systems were indicating a low oil pressureproblem, the engineer knew this was most likely an actual low oil pressure problem so hehad the pilot shut down the engine immediately.

My first question to the engineer on site was whether he had done any maintenance thenight before. In response he indicated he had done a 100hr on the engine. As per the VIHapproved inspection program, part of the 100hr on the engine is to inspect, clean or replacethe engine oil filter. I asked him if he had pulled up on the T handle to drain the oil filterbowl which he stated he had.

E d i t o r K e n G e o f f r e y - Q A M L a y o u t b y D e b b e A n d e r s o n – Q A A d m i n A s s t

By Curtis Fowler – Chief Engineer ATA: 79 Reference: Arriel 1D1 Training Manual 4.17

Maintenance

After quizzing a few engineers on this topic I have learned that there is a misconception amongst many of them that pulling up onthe T handle (once it has been loosened) of the oil filter cover drains the oil filter cavity and prevents oil leakage when the oil filtercover is removed. This in fact is the exact opposite – when you loosen the T handle, this allows the drain valve to unseat on thebottom of the oil filter housing assembly and slowly drain the oil off inside the filter bowl. Pulling up on the T handle actually sealsthe drain valve and prevents oil leakage. Pulling on the T handle can also damage the seal which seals the drain valve. If this sealbecomes damaged, it bleeds off unrestricted oil pressure and causes low oil pressure which in turn will activate the engine oilpressure light and have a low oil pressure indication on the gauge.

To drain the oil filter cavity of residual oil, loosen the T handle which unseats the drain valve and allow it to drain. This drainingmake take up to 5 minutes as the oil passages which drain the cavity are very small. Occasionally, even once the drain valve isunseated, the seal will remain in place limiting the amount of oil which can drain from the oil filter cavity.

When unsuspected defects arise following maintenance, a good starting point for your troubleshooting is looking back at themaintenance you have previously accomplished and how that may be influencing your current defect.

Page 2 – Volume 4, Issue 5 VIH Rotorwash

205 External Fuel Filter Housing By Simon Partridge – Chief Engineer ATA: 79-3-110 Reference: 205 External Oil Filter

Item number 14 has been a problem for some years without a breakdown of the Purolator Filter Assembly. We are now pleased to offer this breakdown as assistance to sealing of the passages to the switch.

Two O’rings MS29561-006, are required.

# 14 - O’rings MS29561-006

VIH Rotorwash Volume 4, Issue 5 - Page 3

The following are recent Airworthiness Directives, Alert Service Bulletins and other TechnicalDocuments which may affect VIH maintenance and operations. Refer to maintenance or flightdocumentation for complete details.

Bell 205/212

1. Bell 205A-1 / 205B - Honeywell T5317B - SB T53-0141 Rev. 2 - Fuel Regulator & Overspeed Governor– Drawdown Plan for new Time Between Overhauls (TBO). R2 is issued to revise the document exportcontrol coding.

Technical Recurrent Training Certification For Maintenance Staff Only - Complete the reverse side and forward:

TO: VIH Helicopters Ltd. Technical Library PO Box 368 Prince George, BC V2L 4S2 ATTN: Denise Blanchette

Or email dblanchette@vih.com – include in the Subject field: “I have read and understand the information in Rotorwash Volume 4, Issue 5 (May, 2012)”

Be sure to include your Name in the Text field.

ADs/ASBs & Tech Docs

Please see ADs/ASBs on page 4

2. Bell 205A-1/212 – Onboard Systems Owner’s Manual 120-031-01 Rev. 30 - UH-1 Cargo Hook Suspension System - Pages affected TOC& Section 8: Removed maintenance information for 528-002-00 hook, replaced with reference to document 120-044-00 6000 Lb CargoHook OM.

3. Bell 205 & 212 Series - ICA-D212-664 Rev. 8 - Instructions for Continued Airworthiness - Crosstube Installation for Bell 204, 205, 210,212, 214, 412. (GGSO is the only A/C with this Dart Cross Tube.)

Bell 206/407

4. Bell 206 - RR 250-C20/C20B - CSL 1149 Rev. 18 - Rolls-Royce Customer Training. 5. Bell 206A/B - TB 206-12-199 - Improved Upper Left Longeron/Fitting Assembly P/N 206-031-314-223A & Aft Fuselage Bulkhead 407-

030-027-105, Introduction of. 6. Bell 206B - RR250-C20B - TR E6R16-72-2 - C20/C20B Series OMM, Publication 10W2, Temp. Rev - Changes to the 100 hour Inspection,

or 150 hour and 300 hr Inspection. VIH engine inspection to be checked for any changes. 7. Bell 206B - RR250-C20R - TR E6R15-72-2 - C20/C20R Series OMM, Publication 10W2, Temp. Rev - Changes to the 100 hour Inspection,

or 150 hour and 300 hr Inspection. VIH engine inspection to be checked for any changes. 8. Bell 206B/407 - RR engines 250 Series - CSL 6059 Rev. 2 - Use of High Thermal Stability (HTS) or Third Generation Oils. 9. Bell 206/407 - RR250-C20B/C47B - CSL 1208 Rev. 2 - Use of High thermal Stability (HTS) or Third Generation Oils (to change to third

generation oil use top off method). 10. Bell 407 - ASB 407-11-95 Rev. C - Upper Left Longeron (channel) P/N 206-031-314-037/ -177 and spare Assembly P/N 206-031-314-

219B, Inspection of. (Revision C is to modify the warrant to TB 407-12-96 Rev. C). 11. Bell 407 - TB 407-12-97 - Solid Machined Aluminium Shims under Transmission Support beams - Installation of. 12. Bell 407 - RR 250-C47B - CSL 6027 Rev. 18 - Rolls-Royce Customer Training. 13. Bell 407 - MMS BHT-407-MMS-1 Reissue - Lightweight Emergency Floatation System Operation and Maintenance. 14. Bell 407 - RR250-C47B - TR E6R14-72-2 - C20/C47B Series OMM, Publication 10W2, Temp. Rev - Changes to the 100 hour Inspection, or

150 hour and 300 hr Inspection. VIH engine inspection to be checked for any changes. 15. Bell 407 - ASB 407-07-80 Rev. A - Tailboom Assembly P/N 407-030-801-107 and 407-530-014-101/-103, New Inspection Requirements. 16. Bell 407 - Maintenance Manual Rev. 34 - Revision affects Chapters 5, 11, 12, 18, 28, 29, 53, 62, 63, 67, 71, 76, 95-99 inclusive. 17. Bell 407 - IL 407-12-103 - Engine Compressor Assy - Replacement of No. 2 Bearing (CEB 72-6067 Rev. 1).

AS350

18. AS350 - Arriel 1 - SL 2844/12/ARRIEL1 - Arriel 1 All Variants – Introduction of the vibration check at high NG rating. 19. AS350 - SB AS350-71.00.07 Rev. 5 - ARRIEL Engine Washing Installation. Mod OP1142, 071378, OP1670, 073227 and 073452. 20. AS350 - SB AS350-25.01.46 Rev. 0 - Equipment and Furnishings – Improvement of front dome light installation. 21. AS350 - SB AS350-63.00.20 Rev. 0 - MGB Lubrication System – Replacement of several hoses (due to internal & external damage by

Manufacturer). 22. AS350 - TIP AS350 29-00-15 - New Hydraulic Pump Drive System - installation is driven by a key and screw instead of splines. 23. AS350 - TIP AS350 31-00-52 - New VEMMD Downloading Tool with AS350/355, EC120 and EC 130 Capability. 24. AS350 - TIP AS350 34-20-03 - Thales AHV 16 Radio Altimeter. 25. AS350/EC135 - IN 2427-I-00 - Technical Publications – Feedback concerning the use of AIPs (Advanced Information Packages from

T.I.P.I.) 26. AS350 - Arriel 1B/1D1 - LISTE_LIS2066 Rev. F - List of Approved Distributors belonging to Turbomeca Network. 27. AS350 - Arriel 1B/1D1 - LISTE_LIS0585 Rev. L - List of Qualified Centers for Level 1, 2, & 3 maintenance under TM monitoring. 28. AS350 - Arriel 1B, 1D1 - SB 292 72 0365 Rev. A - Module M03 (Gas Gen.) Replacement of post TU 347 2nd Stage turbine disk.

Application of Mod TU 365.

Page 4 – Volume 4, Issue 5 VIH Rotorwash

Maintenance Technical Recurrent Training Certification

Print Name

------------------------------------------------------------------------------------------- Signature and ACA/SCA Number

I ___________________________ have read and understand the information in Rotorwash Volume Four, Issue Five. The training credit for the May, 2012 edition is: 1 Hr time.

------------------------------------------------------------------------ Date

Return this Technical Recurrent Training Certification to the Technical Library in Prince George for training time credit.

ADs/ASBs from page 3

29. AS350 - Erratum for SB 25.01.09 Page 2/20 para. 1.A.1. MOD 350A086419.00 corresponds to the embodiment of Modification 073475 atthe works.

30. AS350 (All Eurocopter) SIN 245I-S-00 - Falsification of airworthiness documents & documents of conformity with manufacturer’s data. 31. AS350 Series – Onboard Systems 123-011-01 Cargo Hook Swing Suspension System for AS 350 – ICA Rev. 9 (01 May, 2012). Added

detailed manual release cable inspection to annual/100 hour inspection. Changed 5 year/1000 hour inspection including addition ofdetailed part inspection criteria and moving bushing inspection to 5 year/1000 hour. Updated placards and lubrication requirements.

32. AS350BA - Arriel 1B - Modification Index - date of issue Feb. 29/12. 33. AS350B2 - Arriel 1D1 - Modification Index - date of issue Feb. 29/12. 34. AS350B2/BA - Arriel 1B, 1D1 Engines - EASA AD 2012-0071 – Axial Compressor, Gas Generator Hollow Shaft & Rear Bearing –

Identification/Inspection/Cleaning/Replacement (SS AD 1990-064(A) R1). 35. AS350FX - Honeywell LTS101 - SL LT 101-10-02 Rev. 2 - Support options for compliance with SB LTS101-72-20-0268 and LTS101-73-20-

0262 (PT Gov. Bearing replacement). 36. AS350FX - Honeywell LTS101-700D-2 - SB LT 101-72-40-0103 Rev. 7 - Combustion Section – Rear Bearing Support Housing (RBSH)

Cleaning Procedure. 37. AS350FX - LTS101-700D Temp. Rev. 33 - Adding new engine Model P/N applicability. (New & repaired parts). Part 21 / Part 45.

Sikorsky S-61

38. S-61 - ASB 61B20-36 - WINDOWS – One-Time Inspection to Remove from Service Cast Acrylic Pilot, Co-pilot & Centre Windshields –issued 26 April, 2012. Inspection to be c/o within 30 days, replacement within 1 yr. IPC TRev(s) to be issued at a later date.

39. S-61 – ASB 61B30-16A – FUEL - Fuel Control Systems – Fuel System Installations - 40 Micron Fuel Filter Element and Packing, One-TimeReplacement of. Rev. A revises the fuel filter description and function. Includes updates to SA 4045-80 MM Chap. 12 and 28 Trevs.

40. S-61 – Sikorsky Model Status Report – updated to 27 April, 2012. GE CT58 Technical Manual Index – updated to 01 May, 2012.

Kamov Ka-32A11BC

41. Ka-32 – updated SB List from Kamov – dated 22 Feb, 2012.

Miscellaneous

42. Onboard – 120-039-00 C-39 Indicator for Load Weigh Systems – OM Rev.5 (08 May, 2012) – additions to indicator versions.

VIH Rotorwash Volume 4, Issue 5 - Page 5

Transport Canada has undergone a number of changes in recent months and although TCCA PVIs are not new, the method used forconducting surveillance is. Before I get into that, let me give you a quick overview of what a PVI is and does. But before you canunderstand the future let me explain the past.

TC used to conduct Audits on certificate holders designed to catch contraventions of CARs. Since the implementation of mandatorySafety Management Systems (SMS) within 705 operations which includes airports and AMOs supporting 705 operations, TC has movedaway from the Audit as a surveillance tool to PVIs.

Although it is true that 702, 703 and 704 operations and supporting Approved Maintenance Organizations (AMOs) are not presentlyrequired to have a SMS in place, TC inspectors are using the same reference document and procedures for assessing these operatorsand AMOs as they would if they did have an active SMS. This is why when you look at how TC is conducting a PVI for non-SMS holdersyou’ll find the same “surveillance procedures” used as for operators who require a SMS to be in place.

Safety Report System ActivityFollowing is the Safety Report System Activity from April 21 through May 18, 2012.

Any of these reports or the investigations surrounding them are available to any employee by browsing tohttps://secure.vih.com/vihsecuresite/zLogin/login.asp. A login is required. If you do not have a personal login visit http://support.vih.com with your web browser or e-mail support@vih.com and ask for access to the SafetyReporting System.

Safety

Report Date Description Category Report #

20-Feb-12 Aircraft on raised ground handling wheels tipped backwards; elevator contacted hangar fixture

Ground Related 12049G

10-Apr-12 AME struck his head on vertical fin of helicopter Personal Injury 12050P

02-May-12 PIC was splashed with jet fuel during refueling process Fuel Related 12051F

07-May-12 Company vehicle struck third party vehicle from behind, major damage to both Vehicle 12052V

12-May-12 HETS Extraction required for customer line crew member (notification only) Emergency Response 12053ER

09-May-12 Employee injured his back while exiting a company vehicle - Specific cause unknown Personal Injury 12054P

Blue = Report # is Initialized / Viewable online

Green = Report # is Completed / Viewable online

Orange = Manual Reports / Entered offline

A PVI consists of TC Civil Aviation Safety Inspectors which includes our AMO’s Principle AirworthinessInspector (PAI), formerly known as Principle Maintenance Inspector (PMI). The PVI team reviews ourapproved MPM and CPM as well as carrying out a comprehensive review of the Internal Audit system’sFindings and Observations. The PVI team also conducts interviews of post holders identified within ourapproved manuals as a gauge of their knowledge of the Quality System.

The PVI focuses on what is being audited by the AMO, the frequency of the audits and what findings orobservations are being generated as a result of these audits. Observations typically deal with the one-offswhich, unless there is evidence of repeated observations for the same thing, are easily fixed. Audit Findingsdeal with a system error in that three or more failures of a procedure have been identified. The PVI teamwill dissect the finding into its elements, which is where the saying “Plan, Do Check and Act” is applied:

Transport Canada Civil Aviation Program Validation Inspection or PVI By Ken Geoffrey – Quality Assurance Manager Reference: TCCA SI SUR-001

Non-compliance with a standard – The Person Responsible for Maintenance (Director of Maintenance) is aware and so is theManager responsible for the procedure.

Immediate Corrective Action – action taken to quickly address the non-conformance. Root Cause Analysis – using established causal finding procedures to ensure the cause and any contributing factors are

identified so that an effective Long Term Corrective Action can be developed. Long Term Corrective Action Plan – this is the plan to address the root cause and developed to prevent recurrence. Follow-up Action – verification that the Corrective Action Plan (CAP) is effective.

The PVI has identified a number of areas for improvements such as: Greater oversight by the DoM and QAM on the issuing of Findings and Observations. Notification of the Responsible Manager, who will be responsible for the CAP. Better oversight on CAP acceptance including follow-up action. Update of internal process and procedures where responsible managers will have greater input on the development of quality

procedures used within their area of responsibility.

Page 6 – Volume 4, Issue 5 VIH Rotorwash