# SDR UALA2009123104079

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 31, 2009
- Submitted: January 4, 2010
- Operation: Air carrier
- Aircraft: [N659UA](https://openairdocs.org/aircraft/N659UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 27114
- Aircraft time: 74,166 hours, 12,052 cycles
- Engine: Pwa PW4060
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Gcu
- Part number: M734284DF
- Part serial: 376
- Condition: Malfunctioned
- Location: Nr 1 Generator
- 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/UALA2009123104079

## Discrepancy

LT ENG GEN DRIVE LIGHT OUT.  UNIT FOUND DEFECTIVE.  REPLACED GCU IN ON NR1 ENG SIDE.  RAN ENG SEVERAL TIMES, NO LIGHT FAULTS.  OPS CHECKS GOOD.

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