Service difficulty report · Scavenge Pump · Boeing 757222

Difficulty date
November 15, 2009
Submitted
November 17, 2009
Operation
Air carrier
Aircraft
N584UA
Make and model
Boeing 757222
Aircraft serial
26706
Aircraft time
55,055 hours, 19,167 cycles
Engine
Pwa PW2037
Engine time
57,980 hours, 20,743 cycles
Part
Scavenge Pump
Condition
Cracked
Location
Lt Engine
Stage of operation
CR
How discovered
O
Nature of condition
O
Precautionary procedure
E, A

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

What was found

LT ENG OIL ISSUES, RTFL. FOUND OIL TEMP RED IN EPCS PAGE AND ECS PAGE SHOWS L OIL PUMP LOW MESSAGE. SERVICED NR 1 OIL WITH 4 QTS OIL. PER SFOLM POSSIBLE ENG SCAVENGE PUMP FAILURE. DRAINED OIL TANK, REMOVED LUBE UNIT AND FOUND SCAVENGE IN PORT HOUSING CRACKED AT IMPELLER. RE-INSTALLED UNIT. REPLACED ENG. ALSO FOUND LEFT ENG INBOARD REVERSER UPPER ACTUATOR LEAKING STATIC. REMOVED & REPLACED ACTUATOR, OP CHECKS GOOD. AT THE NR 1 ENG INBOARD UPPER REVERSER ACTUATOR THE SYNC LOCK ATTACHED TO UPPER PART OF ACTUATOR IS LEAKING RAPIDLY. REPLACED SYNC LOCK (P/N TY1878-22 S/N 38).