航空 发表于 2011-4-15 19:25:12

CFM56-7 HMU Overall Reliability

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航空 发表于 2011-4-15 19:25:27

February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 1<BR>HMU Program<BR>CFM56-7 HMU Overall Reliability<BR>February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 2<BR>HMU Program<BR>CFM56-7 P07 HMU Removals / MTBUR<BR>0<BR>5<BR>10<BR>15<BR>20<BR>25<BR>30<BR>35<BR>40<BR>45<BR>50<BR>Jan-01<BR>Feb-01<BR>Mar-01<BR>Apr-01<BR>May-01<BR>Jun-01<BR>Jul-01<BR>Aug-01<BR>Sep-01<BR>Oct-01<BR>Nov-01<BR>Dec-01<BR>Removals<BR>0<BR>2000<BR>4000<BR>6000<BR>8000<BR>10000<BR>12000<BR>14000<BR>16000<BR>18000<BR>20000<BR>MTBUR<BR>HMU Removals<BR>6-Month MTBUR<BR>12-Month MTBUR<BR>February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 3<BR>HMU Program<BR>Removal Cause Last 12 Mo.<BR>116<BR>95<BR>46<BR>43 42 40<BR>33<BR>16 16<BR>9 8<BR>0<BR>20<BR>40<BR>60<BR>80<BR>100<BR>120<BR>140<BR>Chafing / Wrap Fault<BR>FMV F/B<BR>HPSOV Switch<BR>Unknown / Misc<BR>Engine Control Light<BR>DMD/FDBK<BR>BSV<BR>Leak<BR>Precautionary<BR>No Start<BR>No Shutdown<BR>February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 4<BR>HMU Program<BR>HMU reliability remains flat<BR>• Current 12 Month MTBUR is 12,000 Hr’s<BR>• Average removals, 32 per month over the last year<BR>Corrective Actions for top removal causes<BR>• Chaffing/Wrap Fault is leading cause for removal<BR>• Wire bracket Intro production 5/01, SB issued 9/14<BR>• HPSOV Switch Latching on Starts<BR>• CFMI service bulletin 73-067 issued for new switch<BR>Investigations - Refer to separate presentations<BR>• FMV Feedback Fault<BR>• Boeing/CFMI/Honeywell &amp; Kearfott Team established<BR>• Weekly call, and face to face meetings as needed<BR>• MSV / BSV position faults<BR>• On-going investigation focusing on MSV/BSV solenoid pull-in<BR>current

979199501 发表于 2011-4-15 23:53:53

回复 1# 航空 的帖子

Arm
Proposed Switch Configuration
Current Double Throw
Proposed Single Throw
Run contact eliminated
Introduction Logistics
• CFMI/Boeing/Honeywell laun

kinran 发表于 2011-6-4 23:20:02

:victory: :victory:

bocome 发表于 2011-7-31 04:49:13

CFM56-7 HMU Overall Reliability
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