What was found
APU WOULDN'T START. 2 ATTEMPTS. SPOOLED UP TO 14PCT THEN SHUTDOWN. SPOOLED UPTO 14PCT THEN SHUTDOWN. APU NO LIGHT OFF. DUE TO CHRONIC ASD-OPS OK & ODOR IN CABIN. REPLACED APU, OPS CK'S GOOD.
- Difficulty date
- May 15, 2010
- Submitted
- May 17, 2010
- Operation
- Air carrier
- Aircraft
- N120UA
- Make and model
- Boeing 747422
- Aircraft serial
- 29166
- Aircraft time
- 45,349 hours, 5,413 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 4920 · APU Core Engine
- Part
- Apu
- Part number
- S351U0022
- Part serial
- 900556PWC
- Condition
- Faulty
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.