mit n 10 action item update

AW139 Maintenance Improvement

Team MEETING N 10 ACTION ITEMS UPDATE

Cascina Costa, June 4th - 5th, 2015

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This document contains confidential data and information which are

property of AgustaWestland. AgustaWestland forbids its circulation,

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AgustaWestland written consent.

3 AgustaWestland proprietary information – Commercial in confidence

Summary

• MIT meeting history

• 10th MIT – AW proposed action items status

• High priority action items status


Summary





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 IT 62 0

2 17-18 Nov 2011 AWPC 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 IT 13 100 58 -58% 15 – 15% 27 – 27%

5 15-16 Jan 2013 AWPC 27 113 67 -59,5% 32 – 28,5% 14 – 12%

6 6-7 June 2013 AW IT 12 140 92 – 65,7% 37 – 26,4% 11 – 7,9%

7 5-6 Dec 2013 AWPC 10 152 115 – 75,7% 29 – 19,1% 8 – 5,3%

8 12-13 June 2014 AW IT 14 162 124 – 76,5% 31 – 19,1% 7 – 4,3%

9 4-5 Dec 2014 AWPC 7 176 139 – 79% 31 – 17,6% 6 – 3,4%



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Summary





10th MIT – AW action items status

Meeting

number Date and Location

New

action

item

Total

action

item

Proposed action items status

(number and %)

Closed In progress Open

10 4-5 June 2014 AW IT 183 157 – 85,8% 23 – 12,6% 3 – 1,6%

85,8%

12,6%

1,6%

AW Action Items Statistics

CLOSED

IN PROGRESS

OPEN


Summary





Item M003a – Swashplate bolts torque check

Background

Verify reasons behind torque check on swashplate and duplex bearing bolts, for possible improvement.

Status

Original requirement comes form fatigue test performed during initial certification: bolt frequent inspection defined in order not to have a very low life limit due to bolt failure during test.

Fatigue test results reviewed during 7000 Kg ITOW kit certification leading to interval extension to 402 FH.

MI62-06 interval extension published within AMPI Chapter IV, 3rd Issue, Change 4 (March 3rd 2015).

CLO

SED


Item M028 – Time limits: tolerance extension

Background

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

Status

All the tasks (39) coming from SRS analyses can accept a tolerance extension.

Rotors tasks (13), transmission tasks (17) and structure tasks (3) analysis completion

within 3Q 2015.

The target for the completion of the activity is 4Q 2015.

IN P

RO

GR

ESS


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.

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 tests completed confirming oil performances up to 600 FH.

SMC 63-11 interval extended from 300 FH to 600 FH within AMPI Chapter V, Issue 6, Change 9 (April 15th 2015).

CLO

SED


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

Oil sample campaign launched with the support of: Weststar, Bond, CHC and Bristow (US).

First sample received, to be sent to external lab for analysis.

Complete campaign results expected within 3Q 2015.

IN P

RO

GR

ESS


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 at the University of Milan completed in May 2015. Target is to demonstrate a life of 40,000 FH for the main cabin. 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.

IN P

RO

GR

ESS


Item M109 – Anti-torque beam fitting

Background

Evaluate the possibility to chamfer the upper deck bushing to facilitate bolt removal.

Status

MGB middle reinforcement P/N 3P5333A12253 rev D has increased hole tolerances from 15,87-15,91 to 15,91-15,94; Rev D installed in production starting form S/N 31701 and 41501.

The following additional modification are under review:

• Reinforcement chamfer increase from current 90° up to 110°;

• Modified anti-torque beam with larger bushing to install bolt with application of solid lubricant available for test on a prototype.

Based on the test final modification of the applicable drawings expected within 4Q 2015.

IN P

RO

GR

ESS


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

New battery in parallel (44Ah 20 Cells + 27Ah) configuration certified in March 2014.

Gill lead acid batteries tests completed on a prototype: tests confirmed same performances between NiCad and lead acid batteries.

P&WC confirmed acceptable minimum starting torque curve requirement.

CLO

SED


Item R010c – MRA & TRA pressure switch

Background

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

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 by Claverham completed and AW certification completed for MRA (531/532)

and TRA (731).

The new switch will be introduced during MRA upgrade and will supersede current switch

P/N 87137-81 for spares.

CLO

SED


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: STC to install the system and start collecting data. TCA STC approval 26/02/20015; FAA STC approval planned for end of June 2015; EASA STC approval planned 4Q 2015.

• Phase 2: 6 months of data collection after Phase 1 STC approval, software tailoring to allow EPAC in flight and installation of final panel within March 2016.

IN P

RO

GR

ESS


Item R030 – Seat belt buckle

Background

Customers reported cases of seat belt buckle locking system not engaged and requested to evaluate the possibility to disassemble the components and greasing it.

Status

Supplier feedback is that they apply some grease for springs which are located in the bottom of the buckle, therewith it is not possible to lubricate the buckle.

Supplier highlighted that buckles washing or cleaning could compromise the component operation.

CLO

SED


THANK YOU FOR YOUR ATTENTION

MIT N 10

mit n 10 action item update

Documents

aw action items statistics

confidence mit meeting

property of agustawestland

proprietary notice

status original requirement

progress open

form fatigue test

possible improvement