# SDR UALA2010092003471

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 18, 2010
- Submitted: September 20, 2010
- Operation: Air carrier
- Aircraft: N118UA
- Make and model: Boeing 747422
- Aircraft serial: 28811
- Aircraft time: 46,784 hours, 5,703 cycles
- Engine: Pwa PW4056
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Part number: S351U0023
- Part serial: 900571PWC
- Condition: Smoke
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2010092003471

## Discrepancy

AFTER PUSH BACK APU AUTO SHUTDOWN AND ATTEMPTED RESTART AND SMOKE FILLED THE CABIN.  REMOVED APU IAW MM.

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