Service difficulty report · Lubrication Unit · Boeing 737890

Difficulty date
August 14, 2010
Submitted
August 16, 2010
Operation
Air carrier
Aircraft
N579AS
Make and model
Boeing 737890
Aircraft serial
35187
Aircraft time
13,125 hours, 3,890 cycles
Engine
Cfmint CFM567B27
Part
Lubrication Unit
Part number
3404000040
Part serial
YT006740
Condition
Leaking
Location
Nr 2 Engine
Part time
31,198 hours, 10,784 cycles
Stage of operation
IN
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

NR 2 ENG EXCESSIVE OIL CONSUMPTION. FOUND LEAK FROM FUEL PUMP PAD DRAIN IAW DRAIN LINES INSPECTION MM 71 71 00 700 801 F00. REPLACED NR 2 ENG FUEL PUMP PACKAGE AGB ROTATION SEAL PER MM 72 60 00. IDLE LEAK CHECK GOOD. FUEL PUMP PACKAGE REMOVED AND RE-INSTALLED PER MM 73 11 01, LEAK AND OPS CHECKS GOOD. ACCOMPLISHED PART POWER LEAK CHECK. REF MM 71 00 00 700 823 F00 & DRAIN LINE INSPECTION REF MM 71 71 00 700 801 F00. FOUND NO LEAKS FROM DRAIN LINES. FOUND OIL LEAK FROM LUBE UNIT LEAKING BETWEEN LUBE UNIT & OIL LINE. FOUND LUBE UNIT INSERTS PULLED OUT. REPLACED NR 2 ENG LUBE UNIT REF MM 79 21 01 400 801 F00. LEAK CHECK GOOD. VERIFICATION FLIGHT SUCCESSFUL.