SDR DL777061001

Service difficulty report · Oil Cooler · Boeing 777232

Difficulty date: December 1, 2006
Submitted: December 7, 2006
Operation: Air carrier
Aircraft: N861DA
Make and model: Boeing 777232
Aircraft serial: 29952
Aircraft time: 31,569 hours, 5,214 cycles
Engine: Rroyce RB211TRENT89
Engine time: 27,118 hours, 4,509 cycles
System (JASC): 7921 · Engine Oil Cooler
Part: Oil Cooler
Condition: Leaking
Location: Nr 1 Engine
Part time: 27,118 hours, 4,509 cycles
Stage of operation: CR
How discovered: O
Nature of condition: K, J
Precautionary procedure: A

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

What was found

NR 1 ENG OIL LOSS DIVERTING TO YYT FOR REPAIRS. REPLACED FUEL-OIL COOLER PER 79-21-11971300. PERFORMED TEST 2 PER M/M 71-00-00-800-829-R00. NO LEAKS. TESTS GOOD. RAN NR 1 ENG AT HIGH POWER 1.4 EPR FOR 2 MINUTES PER M/M. ALL ENG PARAMETERS NORMAL. NO OIL LOSS NOTED.