SDR 2005UALA00582

Service difficulty report · Apu · Boeing 767322

Difficulty date: June 21, 2005
Submitted: June 28, 2005
Operation: Air carrier
Aircraft: N641UA
Make and model: Boeing 767322
Aircraft serial: 25091
Aircraft time: 60,248 hours, 9,799 cycles
Engine: Pwa PW4060
System (JASC): 4920 · APU Core Engine
Part: Apu
Condition: Shutdown
Location: Apu Bay
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: A

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

What was found

DIVERTED DUE TO AUXILIARY POWER UNIT AUTO-SHUTDOWN WITH LEFT GENERATOR DEFERRED INOPERATIVE. UPON LANDING APU FOUND 4.0 QUARTS LOW. MM ADDED OIL. ENGINEERING MONITORING OIL CONSUMPTION. TO DATE CONSUMPTION IS .014 QT/HOUR. LIMIT IS .20 QT/HR. SAMC REQUESTED ALITUDE START AND RAN APU ONE HOUR AT ALTITUDE WITH NO OIL CONSUMPTION. CAUSE OF LOW OIL QTY UNKNOWN. 0.3 OF QT USED SINCE EVENT WITH .001 QT/HR.