# SDR UALA2011032401406

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 23, 2011
- Submitted: March 25, 2011
- Operation: Air carrier
- Aircraft: [N211UA](https://openairdocs.org/aircraft/N211UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30217
- Aircraft time: 38,667 hours, 8,519 cycles
- Engine: Pwa PW4077
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Generator
- Part number: 756589A
- Part serial: 171
- Condition: Faulty
- Location: Apu
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011032401406

## Discrepancy

PRIOR TO DEP, APU GEN DROPS OFF LINE, HISTORY.  DUE HISTORY APU GEN INOP.  APU GCU REPLACED PREVIOUSLY.  SUSPECT APU GEN.  APU GENERATOR PCN IS 661-9003. REPLACED APU GENERATOR, OPS CHECKS OKAY.

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