CFM56-7 Starter Reliability CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 2 0 10000 20000 30000 40000 50000 Jan-99 Mar-99 May-99 Jul-99 Sep-99 Nov-99 Jan-00 Mar-00 May-00 Jul-00 Sep-00 Nov-00 Jan-01 Mar-01 May-01 Jul-01 Sep-01 Nov-01 Date MTBUR (hours) 12 Month Rolling Average MTBUR CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 3 Summary of -P08 Reported Removals Leakage is Top Removal 0 10 20 30 40 50 60 70 80 90 100 Oil Leakage Debris on mag plug No start FOD No Report Findings Count Leakage is Top Cause for Removal CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 4 Typical Symptoms -White smoke during engine starts - Oil dripping from starter screen Cause Identified -O-ring friction increases with time and temperature -Spring forces insufficient to maintain contact between carbon seal and rotor resulting in oil leakage Fix to be Implemented - Fluorocarbon O-ring material changed from durometer 75 to durometer 60 to reduce friction Oil Leaks Leading Cause for Removals CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 5 Seal Oil Leak Smoke Seal Case O-ring Carbon Ring CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 6 2001 4th Qtr 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Turbine Seal Wear Couple Testing Oil Leakage TOPS8D 2000 2002 Turbine Rotating Group TOPS8D Analysis & Test Complete Introduce Turbine Stack & Seal Design Changes Turbine Seal Turn-on/Turn-off Test Complete P09 Introduction P10 Introduction Starter Definitions • P09: Existing P07 or P08 with redesigned Turbine Seal - Upgrade P07 or P08 field units at first shop visit - no charge • P10: P08 with Redesigned Turbine Seal and Turbine Stack - New production unit - Upgrade P08 field units to P10 at Customer request - Cannot upgrade a P09 to a P10 if P09 is upgraded from a P07 CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 7 P07 P09 P08 -or- Redesigned Turbine Seal Redesigned Turbine Seal and Turbine Stack P08 P09 P10 P07 P09 P10 *Cannot upgrade to P10 from P09 if the P09 is based on a P07 upgrade Starter Part Definition & Upgrade Trees CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 8 • Program 95% complete • 65 units remain for upgrade • Free upgrade ends Apr 2002 per SB 80-005 Fleet Wide P08 Upgrade Status CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 9 Summary • Root Cause of oil leakage established • P09 upgrades available in July 2002 • New P10 starter upgrades to be introduced September 2002作者: 979199501 时间: 2011-4-12 14:21:29 标题: 回复 1# 航空 的帖子
