February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 1 HMU Program CFM56-7 HMU Overall Reliability February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 2 HMU Program CFM56-7 P07 HMU Removals / MTBUR 0 5 10 15 20 25 30 35 40 45 50 Jan-01 Feb-01 Mar-01 Apr-01 May-01 Jun-01 Jul-01 Aug-01 Sep-01 Oct-01 Nov-01 Dec-01 Removals 0 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 MTBUR HMU Removals 6-Month MTBUR 12-Month MTBUR February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 3 HMU Program Removal Cause Last 12 Mo. 116 95 46 43 42 40 33 16 16 9 8 0 20 40 60 80 100 120 140 Chafing / Wrap Fault FMV F/B HPSOV Switch Unknown / Misc Engine Control Light DMD/FDBK BSV Leak Precautionary No Start No Shutdown February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 4 HMU Program HMU reliability remains flat • Current 12 Month MTBUR is 12,000 Hr’s • Average removals, 32 per month over the last year Corrective Actions for top removal causes • Chaffing/Wrap Fault is leading cause for removal • Wire bracket Intro production 5/01, SB issued 9/14 • HPSOV Switch Latching on Starts • CFMI service bulletin 73-067 issued for new switch Investigations - Refer to separate presentations • FMV Feedback Fault • Boeing/CFMI/Honeywell & Kearfott Team established • Weekly call, and face to face meetings as needed • MSV / BSV position faults • On-going investigation focusing on MSV/BSV solenoid pull-in current作者: 979199501 时间: 2011-4-15 23:53:53 标题: 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作者: kinran 时间: 2011-6-4 23:20:02
