# SDR UALA2012073004119

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 29, 2012
- Submitted: August 24, 2012
- Operation: Air carrier
- Aircraft: [N773UA](https://openairdocs.org/aircraft/N773UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26929
- Aircraft time: 69,051 hours, 13,197 cycles
- Engine: Pwa PW4077
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Generator
- Part number: 756589A
- Part serial: 133
- Condition: Inoperative
- Location: Apu
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012073004119

## Discrepancy

APU GENERATOR WILL NOT STAY ONLINE.  APU GENERATOR EXCITER FIELD OUT OF RANGE. REPLACED APU GENERATOR PER AMM, OPS CHECKED GOOD.

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