SDR 2008UALA01812

Service difficulty report · Engine · Boeing 777222

Difficulty date: March 29, 2008
Submitted: April 1, 2008
Operation: Air carrier
Aircraft: N787UA
Make and model: Boeing 777222
Aircraft serial: 26939
Aircraft time: 47,627 hours, 7,333 cycles
Engine: Pwa PW4090
System (JASC): 4990 · APU Oil System
Part: Engine
Condition: Oil Consumption
Location: Apu
Stage of operation: NR
How discovered: 9
Nature of condition: J
Precautionary procedure: O

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

What was found

APU HIGH OIL CONSUMPTION GENERATED RED ALERT. UNABLE TO DUPLICATE PROBLEM. APU HOC TROUBLE-SHOOTING DUE TO INCREASE APU OIL CONSUMPTION, ACCOMPLISH HIGH OIL CONSUMPTION TROUBLESHOOTING PER 777 FIM 49-20-00-810-818 TASK 818 PG252 REPAIR ALL LEAKS. 26MAR SFO ACP: TASK ACCOMPLISHED PER CALLOUT NO LEAKAGE, NO BLACK SMOKE DETECTED. APU SERVICED TO FULL, RAN FOR APPROX 30 MINUTES NO OIL CONSUMPTION INDICATED.