What was found
APU AT ALTITUDE, DID NOT START - COLD SOAK.
- Difficulty date
- June 7, 2013
- Submitted
- June 14, 2013
- Operation
- Air carrier
- Aircraft
- N221UA
- Make and model
- Boeing 777222
- Aircraft serial
- 30552
- Aircraft time
- 50,456 hours, 6,268 cycles
- Engine
- Pwa PW4090
- System (JASC)
- 4920 · APU Core Engine
- Part
- Apu
- Condition
- Inoperative
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- L
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.