Service difficulty report · Bypass Valve · Boeing 757222

Difficulty date
October 26, 2008
Submitted
October 30, 2008
Operation
Air carrier
Aircraft
N546UA
Make and model
Boeing 757222
Aircraft serial
25367
Aircraft time
62,995 hours, 18,343 cycles
Engine
Pwa PW2037
Part
Bypass Valve
Part number
1043V0300
Condition
Leaking
Location
Oil System
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
C

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

What was found

LEFT GENERATOR EICAS ON TAKEOFF ROLL. IDG REQUIRED 3 PINTS OF OIL TO SVC TO FULL. RAN ENG FOUND FUEL-OIL HEAT EXCHANGER BYPASS VALVE LEAKING AT DRAIN TRAP AT 10 DROPS PER MIN. INDICATED NO FAULTS AND DELTA P WAS NOT POPPED.