SDR CALA2013090290898

Service difficulty report · Gearbox · Boeing 777222

Difficulty date: August 30, 2013
Submitted: September 3, 2013
Operation: Air carrier
Aircraft: N787UA
Make and model: Boeing 777222
Aircraft serial: 26939
Aircraft time: 72,035 hours, 10,299 cycles
Engine: Pwa PW40903
System (JASC): 7260 · Turbine Engine Accessory Drive
Part: Gearbox
Condition: Leaking
Location: Nr 2 Engine
Stage of operation: CL
How discovered: O
Nature of condition: K
Precautionary procedure: O

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

What was found

NR 2 ENGINE ANGLE GEAR BOX SHOWS SIGNS OF OIL LEAKING. SPRAYED DOWN AREA OF NR 2 ENGINE ANGLE GEARBOX WITH ALCOHOL, 5 MINUTES IDLE RUN ENGINE. CONFIRMED OIL LEAK & POSSIBLE CRACK IN CASE, OIL COMING OUT OF GEAR BOX COVER. REPLACED ANGLE GEARBOX COVER O-RING IPC 72-62-00-003 ITEM 130, COVER O-RING ITEM 30 & FLAT PLUG O-RING ITEM 1 IPC 72-62-00-004. CLEANED & DRIED AREA, RAN ENGINE, FOUND GEARBOX WET WITH OIL AGAIN.