Service difficulty report · Scavenge Pump · Boeing 757222

Difficulty date
November 7, 2009
Submitted
November 11, 2009
Operation
Air carrier
Aircraft
N551UA
Make and model
Boeing 757222
Aircraft serial
25399
Aircraft time
68,319 hours, 19,724 cycles
Engine
Pwa PW2037
Part
Scavenge Pump
Part number
1B30517913
Part serial
51
Condition
Faulty
Location
Engine
Stage of operation
CR
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

DURING CRUISE OIL QUANTITY LEFT ENG 19, RIGHT ENG 09. RAN ENGINE QUANTITY DROP APPROX 10 QT. NO EVIDENCE OF A LEAK. FILLED OIL TANK TO FULL. ALL OTHER INDICATIONS NORMAL. REPLACED OIL QUANTITY TRANSMITTER. FIVE MINUTE IDLE LEAK CHECK OKAY, AND OPERATIONAL TEST-OIL QUANTITY INDICATING SYSTEM OKAY. REOPENED ON 06NOV09 DUE TO SAME PROBLEM ON HI POWER RUN. REPLACED LUBRICATION AND SCAVENGE OIL PUMP. ACCOMPLISHED RUN TEST. ALL PARAMETERS WITHIN LIMITS AND LEAK CHECKS GOOD.