# SDR UALA2012030701491

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2012
- Submitted: March 29, 2012
- Operation: Air carrier
- Aircraft: [N215UA](https://openairdocs.org/aircraft/N215UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30221
- Aircraft time: 42,083 hours, 9,039 cycles
- Engine: Pwa PW4077
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Generator
- Part number: 756589A
- Part serial: 627
- Condition: Faulty
- Location: Apu
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012030701491

## Discrepancy

APU GENERATOR DROP OFF PRIOR TO PUSH BACK.  MAINTENANCE MESSAGE 24-31613 APU GENERATOR EXCITER FIELD CURRENT IS OUT OF RANGE.  NO GEN OFF LIGHT ILLUMINATED.  REMOVED AND REPLACED APU GENERATOR PER REF AMM, OPS CHECK NORMAL.

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