Service difficulty report · Packing · Boeing 7879

Difficulty date
January 1, 2023
Submitted
January 2, 2023
Operation
Air carrier
Aircraft
N38955
Make and model
Boeing 7879
Aircraft serial
37814
Aircraft time
35,241 hours, 3,439 cycles
Engine
GENX1B76
Engine time
17,910 hours, 1,827 cycles
Part
Packing
Part number
J1438P908
Condition
Failed
Location
Rt Engine
Stage of operation
CR
How discovered
O
Nature of condition
Y
Precautionary procedure
A, E

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

What was found

ENG OIL SYS R ENGINE OIL PRESSURE IS LOW INDICATING PROBLEM WITH ENGINE OIL PUMP. ELECTRONIC ENGINE CONTR OL CHAN-B (RT ENG) CREW MENTIONS ENGINE SHUTDOWN WHEN ENGINE AT 3 PSI. ENSURE WINDMILL INSPECTION PERFORMED IAW AMM, LEAK CONFIRMED AT FWD FACE ACCESSORY GEARBOX OIL NOZZLE PACKING. ENGINE TEST, DRY-MOTOR, LEAK TEST CARRIED OUT. LEAK CONFIRMED AT FWD FACE ACCY GEARBOX OIL NOZZLE PACKING IAW 72-64-00-03, ENG AGB ASSY-HOUSING, OIL NOZZLES, AND CONNECTING PIN (ACCESSORYGEARBOX ONLY). ENGINE RUN AND LEAKED CHECKED AS PER AMM 71-00-00-12A-364A-A NIL LEAKS FOUND. REPLACED AGB OIL NOZZLE 038D2 IAW MANUAL GEK112851 - REV 36, 10/31/2022EM 72-64-00 ACCESSORY GEARBOX ASSEMBLY - DISASSEMBLY. OIL SERVICED TO FULL.

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