Service difficulty report · Seal · Boeing 737890

Difficulty date
April 29, 2009
Submitted
May 1, 2009
Operation
Air carrier
Aircraft
N557AS
Make and model
Boeing 737890
Aircraft serial
35176
Aircraft time
11,116 hours, 3,244 cycles
Engine
Ge CFM567B24
Part
Seal
Part number
3051157040
Condition
Leaking
Location
Nr 1 Gearbox
Component
Gearbox
Component part number
3400465040
Stage of operation
TX
How discovered
O
Nature of condition
K
Precautionary procedure
K

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

What was found

ON POST FLIGHT INSPECTION FLIGHT CREW DISCOVERED OIL ON NR 1 ENGINE COWLING. ACCOMPLISHED PART POWER LEAK CHECK PER 71-00-00-700-823-F00 FOUND OIL LEAKING FROM FUEL PUMP PAD DRAIN LEAKAGE IS WITHIN SERVICEABLE LIMIT BUT EXCEEDS THRESHOLD LIMITS. OK FOR CONTINUED SERVICE BUT MUST BE REPAIRED WITHIN 100 FLT HOURS. REMOVED FUEL PUMP PACKAGE, REPLACED SEALOL SEAL PER AMM 72 60 00 400 STEP FIG (1 2). RE-INSTALLED FUEL PUMP PACKAGE PER AMM 73-11-01-400 STEPS F-H. INSP NR 50-57120. ACCOMPLISHED STEP H OF MM 73-11-01-400. COMPLETED INSTALLATION OF FUEL PUMP PACKAGE OF 73-11-01 (I) RAN ENGINE AND NO LEAKAGE NOTED.