Service difficulty report · Scavenge Pump · Boeing 777222

Difficulty date
November 20, 2013
Submitted
November 26, 2013
Operation
Air carrier
Aircraft
N777UA
Make and model
Boeing 777222
Aircraft serial
26916
Aircraft time
75,441 hours, 13,431 cycles
Engine
Pwa PW4077
Part
Scavenge Pump
Condition
Faulty
Location
Nr 1 Engine
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

NR 1 ENG HIGH OIL CONSUMPTION EXCEEDS LIMIT, TS FIM 71-05 T830. IAW AD 2003-26-09, IF EXCEED 0.5 PER HOUR & NO CAUSE FOUND, BORO NR 3 WEEP MM TASK 72-00-88-290-803-N01 WITHIN 100CY. CARRIED OUT INSPECTION OF HPT STAGES T1 & T2 NO DEFECTS NOTED. CARRIED OUT REPLACEMENT OF LUBRICATION & SCAVENGE OIL PUMP IAW MM 72-52-00 PG601, CARRIED OUT IDLE CHECK FOR TEN MINUTES IAW JRH 2-2-1 NO LEAKS. CARRIED OUT ENG TESTS 3A &13 IAW MM 71-00-00, ALL INDICATIONS & OPERATIONS OKAY.