SDR CALA2015022793181

Service difficulty report · Apu · Boeing 757222

Difficulty date: February 25, 2015
Submitted: February 27, 2015
Operation: Air carrier
Aircraft: N598UA
Make and model: Boeing 757222
Aircraft serial: 28751
Aircraft time: 61,443 hours, 16,754 cycles
Engine: Pwa PW2037
Engine time: 28,792 hours, 19,648 cycles
System (JASC): 4920 · APU Core Engine
Part: Apu
Condition: Faulty
Location: Apu Bay
Stage of operation: CR
How discovered: O
Nature of condition: K, B
Precautionary procedure: O

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

What was found

APU ALTITUDE NO START, COLD SOAK FL 380. APU SHUTDOWN AFTER REACHING 95% SPEED AFTER 10 SECONDS. SERVICED APU TO FULL, APU STARTED. WHILE RUNNING, OBSERVED LARGE PLUMES OF SMOKE FROM EXHAUST. AUTO SHUTDOWN AFTER FIVE MINUTES. RECHECKED OIL LEVEL & FOUND NO OIL LEVEL IN SIGHT GLASS. REPLACED APU IAW AMM 49-11-01. LEAK CHECKED GOOD.