mit n 9 action items update
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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
9th MIT AW proposed action items status
High priority action items status
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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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MIT meeting history (2/4)
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Act
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MIT meeting event
Total action items
Closed #
In progress #
Open #
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MIT meeting history (3/4)
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Act
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MIT meeting event
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MIT meeting history (4/4)
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Act
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MIT meeting event
Closed #
Delta closed
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Summary
MIT meeting history
9th MIT AW proposed action items status
High priority action items status
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9
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
8th MIT AW proposed action items status
High priority action items status
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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
IN P
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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.
IN P
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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.
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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
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