SDR UALA2012082104659

Service difficulty report · Oil Cooler · Boeing 757222

Difficulty date: August 21, 2012
Submitted: October 1, 2012
Operation: Air carrier
Aircraft: N590UA
Make and model: Boeing 757222
Aircraft serial: 28708
Aircraft time: 58,132 hours, 16,274 cycles
Engine: Pwa PW2037
Engine time: 76,865 hours, 24,981 cycles
System (JASC): 7921 · Engine Oil Cooler
Part: Oil Cooler
Part number: 1043V0300
Part serial: 1779
Condition: Leaking
Location: Engine
Part time: 76,865 hours, 24,981 cycles
Stage of operation: IN
How discovered: O
Nature of condition: K
Precautionary procedure: O

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

What was found

REPEAT WRITEUPS FOR IDG OIL SERVICE AND IDG PREVIOUSLY REPLACED AND NO EXTERNAL LEAKS NOTED. AT END OF FLT 305-20 OGG-SFO REPLACE THE FUEL OIL HEAT EXCHANGER PER MM 79-21-01 P401 AND BYPASS VALVE PER MM. PARTS NEEDED FOX PCN 645-9029, BYPASS VALVE 645-9061, SEALS (3EA 281-0296, 290-6984, 750-1177, 750-1221). (2 EA 750-1240, 750-2050, 280-1693, 230-0377), AND 1 EA 290-8634. REPLACED FUEL OIL COOLER AND BYPASS VALVE PER MM.