# SDR UALA2010091603445

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 15, 2010
- Submitted: September 17, 2010
- Operation: Air carrier
- Aircraft: [N219UA](https://openairdocs.org/aircraft/N219UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30551
- Aircraft time: 40,220 hours, 4,966 cycles
- Engine: Pwa PW4090
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Gcu
- Part number: 756603E
- Part serial: 57
- Condition: Faulty
- Location: Apu Generator
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2010091603445

## Discrepancy

FOUND APU GENERATOR INOP ON ARRIVAL.  REPLACED GCU, LOADED SOFTWARE, NO HELP FAULT MSG  24-31713, POSSIBLE AUX POWER BREAKER. REOPENED BY ORDMM - ENTERED IN ERROR.  REPLACED GENERATOR, NO HELP. MR24223  -ON 119. -OFF 109. PARTS NEEDED ARE TERMINAL BLOC2, BOLT, WASHER, NUT AND FEEDER CABLE ASSY. MSG 24-31613. ACPED IAW MEL. FOUND MSG 24-31613 AND 24- 31713. GEN CAN KEEP ON-LINE  AROUND 4 MIN THEN DROP OFF ITSELF. TRIED 3 TIMES. SAME CONDITION. FOLLOWING FIM 24-51 TASK 814.  REPLACED AUX POWER BREAKER C24335 IAW MM.

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