# SDR UALA2012100305622

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 3, 2012
- Submitted: October 22, 2012
- Operation: Air carrier
- Aircraft: [N784UA](https://openairdocs.org/aircraft/N784UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26951
- Aircraft time: 69,129 hours, 9,719 cycles
- Engine: Pwa PW40903
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Generator
- Part number: 1701768
- Part serial: 697
- Condition: Faulty
- Location: Nr 1
- Stage of operation: IN
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012100305622

## Discrepancy

STATUS MESSAGE ELEC BACKUP GENERATOR L AFTER SHUTDOWN.  CYCLED BACKUP GENERATOR SWITCH, RAN ENGINE, BUG OPERATED NORMALLY MSG RETURNED AFTER SHUTDOWN.  REPLACED LEFT ENGINE BACK UP GENERATOR.

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