# SDR 2008UALA04178

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 8, 2008
- Submitted: August 12, 2008
- Operation: Air carrier
- Aircraft: [N668UA](https://openairdocs.org/aircraft/N668UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 30024
- Aircraft time: 33,376 hours, 9,207 cycles
- Engine: Pwa PW4056
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Gcu
- Part number: 734285E
- Condition: Failed
- Location: Left
- Stage of operation: TX
- How discovered: O
- Nature of condition: H, J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2008UALA04178

## Discrepancy

LT GEN FAILED TO ROLL ON POWER THRUST REJECTED AT 40 KNOTS.  SUSPECT FAULTY IDG. REPLACED IDG. NO VOLTS OR FREQS.  FOUND NR 1 GCU FAULTY. REMOVED AND REPLACED GCU. OP CKS GOOD.

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