Mit n 9 Action Items Update

AW139 Maintenance Improvement

Team

MEETING # 9 ACTION ITEMS UPDATE

Philadelphia, 04th - 05th December 2014

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Summary

MIT meeting history

9th MIT AW proposed action items status

High priority action items status

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Summary

MIT meeting history



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MIT meeting history (1/4)

Meeting

number

Date and

Location

New action

item

Total action

item

Action items status (number and %)

Closed In progress Open

1 25-27 May 2011

AW Cascina C. 62 0

2 17-18 Nov 2011

AW Philadelphia 30 62 25 40% 12 20% 25 40%

3 11 Feb 2012

HAI Dallas 8 92 40 43,5% 11 12% 41 44,5%

4 7-8 June 2012

AW Cascina C. 13 100 58 -58% 15 15% 27 27%

5 15-16 Jan 2013

AW Philadelphia 27 113 67 -59,5% 32 28,5% 14 12%

6 6-7 June 2013

AW Cascina C. 12 140 92 65,7% 37 26,4% 11 7,9%

7 5-6 Dec 2013

AW Philadelphia 10 152 115 75,7% 29 19,1% 8 5,3%

8 12-13 June 2014

AW Cascina C. 14 162 125 77,2% 30 18,5% 7 4,3%

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9th MIT AW action items status

Meeting

number

Date and

Location

New action

item

Total action

item

Action items status (number and %)

Closed In progress Open

9 4-5 Dec 2014

AW Philadelphia 176 139 79,0% 31 17,6% 6 3,4%

79%

17,6%

3,4%

AW Action Items Statistics

CLOSED

IN PROGRESS

OPEN

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Summary

MIT meeting history



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Item M028 Time limits: tolerance extension

Background

Evaluate to increase AMPI Chapter 5 inspection tolerances from current 50 FH to 100 FH.

Status

The certification process has been formally launched according to our DOA privileges.

All the tasks coming from SRS analyses can accept a tolerance extension. For the other inspections

the analysis is in progress.

The target for the completion of the activity is 3Q 2015.

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Item M046 Liebherr LG task interval extension

Background

Evaluate to increase AMPI Chapter 5 Liebherr Landing Gear system inspection intervals from current

300 FH or 300 FH / 1 Year to 600 FH at least.

Analysis of AW in service reports and Liebherr technical data and repair shop records confirmed no

critical technical issue related to the Landing Gear system to prevent inspection interval extension.

Status

AW and Liebherr agreed on the task interval extension from current 300 FH to 600 FH.

Liebherr substantiation document officially signed received.

Modification introduced with AMPI Chapter V Issue 6 Change 7.

CLO

SED

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Item M060b MGB oil servicing extension

Background

Oil sample campaign to substantiate extension of the servicing interval from current 300 FH to 600 FH

agreed and defined.

Six MGBs from three different Customers (CHC, Weststar, Chevron) to be monitored at 300 FH and

600 FH to compare oil characteristics.

Oil collection campaign completed with CHC and Weststar; on-going with Chevron; target completion.

Status

Laboratory analysis confirmed oil characteristics at 300 FH and 600 FH within specification.

Scuffing test completed on oil samples confirming no oil degradation at 600 FH compared to 300 FH

and new oil.

Micro pitting testing on going at external laboratory; test completion planned for end of December

2014 with official report in January 2015; preliminary data confirming oil performances up to 600 FH.

AMPI will be revised accordingly within 1Q 2015

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Item M060c IGB/TGB servicing interval evaluation

Background

Based on the MGB oil campaign, AW decided to launch a sample campaign on IGB/TGB oil (without

extension trial) to compare results from IGB/TGB samples with MGB ones; based on the results

servicing interval extension will be evaluated (potential extension campaign will be necessary).

Status

Campaign to be launched according to the following requirement:

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IGB N

TGB N

Customer Oil type Environment

Analysis type Sample qty

2 2 Customer A Oil BP2380 A Physic-Chemical 0.5 l

2 2 Customer B Oil BP2380 B Physic-Chemical 0.5 l

2 2 Customer C Oil BP2380 C Physic-Chemical 0.5 l

1 1 Customer A/D Aeroshell Turbine Oil 555 A Physic-Chemical 0.5 l

1 1 Customer B/E Aeroshell Turbine Oil 555 B Physic-Chemical 0.5 l

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Item M070 MR blade & damper bolts lubrication

Background

Some Operators, via special concession, tested different products.

CHC confirmed that Parker Lube is effective; ERA confirmed that Marine Grease is effective; FBH

confirmed that Loctite 8009 is effective.

Status

Application on MR blade and damper bolts of Loctite 8009 in addition to solid lubricant.

Design modified with the application of Loctite 8009 in addition to solid lubricant in October 2014 and

introduced into IETP Issue 25 (November 2014).

Alternative materials to be tested.

CLO

SED

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Item M088 AMPI Chapter IV intervals

Background

Evaluate the possibility to rely on numbers (non rounded to next scheduled 300/600 etc...) to gain

tolerance/margins on AMPI Chapter IV intervals.

Status

Considering that a complete review of the AMPI Chapter IV intervals is not feasible, Operators

requested to evaluate the margin on the following MI tasks: 53-07/08/09 (and eventually 53-01/05/06)

New full scale cabin fatigue tests started at the University of Milan. The target is to demonstrate a life

of 40,000 FH for the main cabin. Test is planned to run for all 2015. This test will be used to support

extension of the inspection interval.

Target inspection interval:

Fuselage tasks (53-07/08/09 ):1200 FH;

Tail tasks (53-01/05/06): considerable extension or removal

EASA certification planned within 4Q 2015 based on

EASA representative engagement.

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Item R002a Lead acid batteries

Background

Operators requested AW feedback on the possibility to use Lead acid batteries on AW139.

AW certified in March 2014 KIT BATT. START IN PARALLEL 27AH AND 44AH P/N 4G2430F00811 to

further improve starting performances; this is the basic configuration to test Lead Acid batteries.

AW confirmed availability to test lead acid batteries on a prototype helicopter in the parallel

configuration and to share data with batteries manufacturer to support STC approval.

Status

Gill batteries (44 Ah + 27 Ah) received by supplier for test.

Kit P/N 4G2430F00811 retrofitted on prototype helicopter to perform comparison between current

NiCad batteries and Lead Acid.

Baseline flights with NiCad configuration planned for mid December; soon after the same flights with

Lead Acid batteries to compare configuration performances with PW&C versus the minimum starting

torque curve requirement.

As soon as test results will be available, they will be shared within MIT group and STC applicants.

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Item R010b MRA & TRA pressure switch mod

Background

Customers requested BT139-105 Part III effectiveness on servo pressure switch modified installation

(new boot and Goretex patch on switch ventilation hole).

Goretex patch applied in production by AW on MRA but not on TRA.

Status

Goretex patch will be applied basic in production by Claverham on new pressure switch P/N 87137-

81; this pressure switch is the current one with the application of the patch.

The new pressure switch will be basic on the new MRA and TRA design to introduce the new VL-

seals.

According to available reports the introduction of the modified installation reduced the events of failure

signals.

CLO

SED

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Item R010c MRA & TRA pressure switch

Background

Customers requested a plan for the design of a new pressure switch.

IN P

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Status

Claverham is qualifying a new hermetically sealed

pressure switch P/N 87223-85 including a physical

separation between the mechanical and the electrical

portion of the switch.

The Goretex patch will be applied also to the new

switch.

Qualification will be completed within December 2014

with final certification within January 2015.

New switch will become basic in production and for

spares.

New switch availability: April 2015

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Item R010d MRA & TRA pressure switch

Background

Customers requested to evaluate an alternative supplier for the switch, proposing Benz as it is used

on other platforms.

Status

Benz are not a recognised or approved supplier for UTAS and are not currently included in the UTAS

Global Supply Chain Strategy.

The qualification and approval process for any new supplier is extensive and far in excess of the

activity currently being undertaken with the current supplier for the new pressure switch.

Proposal is to monitor new sealed switch (refer to item R010c) and then evaluate with UTAS an

alternative solution.

CLO

SED

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Item R011a EPA

Background

Customers requested the possibility to perform automatic in flight EPA to save fuel currently necessary

to comply with this requirement especially for Operators operating under Cat A.

Status

P&WC is working to certify an STC to provide EPA automatic capability (FAST).

Hardware installation location defined.

Launch Customer identified; installation in progress based on helicopter availability.

PWC is looking for other Customers willing to install the STC.

Program divided into two phases:

Phase 1: FAA STC approval within February 2015 to install the system and start collecting as

much data as data possible.

Phase 2: based on the data gathered after Phase 1, software tailoring to allow EPAC in flight;

target end of 2015

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THANK YOU FOR YOUR ATTENTION

MIT # 9

Mit n 9 Action Items Update

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Transcript of Mit n 9 Action Items Update