# SDR DALA2018121107131

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 10, 2018
- Submitted: December 11, 2018
- Operation: Air carrier
- Aircraft: [N861NW](https://openairdocs.org/aircraft/N861NW), registered now
- Make and model: Airbus A330-223
- Registry model: [Airbus A330-223](https://openairdocs.org/model/airbus-a330-223) (OpenAirDocs)
- Aircraft serial: 0796
- Aircraft time: 52,030 hours, 6,404 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Gcu
- Condition: Failed
- Location: Nr 1
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2018121107131

## Discrepancy

SHIP 3361 - ATB - CREW AND DISPATCH MADE OPERATIONAL DECISION TO RETURN TO ATL DUE TO A #1 ENGINE IDG OIL FAULT. CORRECTIVE ACTION: REPLACED NBR 1 GCU. LP 5039303

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