SDR 22AA200900027

Service difficulty report · Shaft · Boeing 757225

Difficulty date: October 8, 2009
Submitted: October 15, 2009
Operation: Air carrier
Aircraft: N689GX
Make and model: Boeing 757225
Aircraft serial: 22689
Aircraft time: 60,478 hours, 24,832 cycles
Engine: Rroyce RB211535E4
Engine time: 53,472 hours, 21,169 cycles
System (JASC): 7210 · Turbine Engine Reduction Gear
Part: Shaft
Condition: Sheared
Location: Gearbox
Part time: 53,472 hours, 21,169 cycles
Stage of operation: CR
How discovered: O
Nature of condition: X
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

"L" OIL FILTER MSG OIL PRESS AND VIBRATION NORMAL 78 PSI, 0.7 N3 RESPECTIVELY, 79-21-06-01. IN CRUISE, PRIOR TO DESCENT, LT ENGINE FAIL. ACCOMPLISHED RB # 026248, REMOVED NR 1 ESN 30595 DUE TO RADIAL GEAR BOX SHAFT SHEARED. INSTALLED ESN 30700 IAW MM 71-00-02 (BOOTSTRAP METHOD PG 426-463 INSTRUCTIONS).