February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 1 Thrust Reverser Sync-Shaft Leakage February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 2 Thrust Reverser Sync-Shaft Leakage Background • Four operators reported 32 reports of hydraulic fluid leakage from sync shaft tubing One operator reported total of 24 reports, with 17 reported in 2001 • Appear to be increasing trend with middle-to-older airplanes • Leakage is always on lower sync shaft tube, P/N 315A1805-25 All but one report has leakage at lower end of tube (at lower actuator) • Leakage appears to be specific to O-ring, P/N NAS1611-15, installed between tube and tube adapter February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 3 Thrust Reverser Sync-Shaft Leakage Investigation Status • Design similar to 737-300/400/500 and 757/PW2000 thrust reversers, which have no reports of chronic leakage • Investigating possible effects of new BMS3-11 LD4 and LD5 Skydrol on installation Initial results show no affect • Initiated investigation of installation Hampered by lack of returned hardware February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 4 Thrust Reverser Sync-Shaft Leakage February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 5 Summary • Boeing needs returned hardware to conduct full investigation • Request operators that experience noted leakage to provide removed hardware to local Field Service Representative for onward distribution to Boeing Thrust Reverser Sync-Shaft Leakage作者: kinran 时间: 2011-6-4 23:32:54
