# SDR COEA2009092501821

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 25, 2009
- Submitted: September 29, 2009
- Operation: Air carrier
- Aircraft: [N821FX](https://openairdocs.org/aircraft/N821FX), registered now
- Make and model: Aerosp ATR 72 202
- Registry model: [Aerosp ATR 72 202](https://openairdocs.org/model/aerospatiale-atr-atr-72-202) (OpenAirDocs)
- Aircraft serial: 253
- Aircraft time: 30,736 hours, 29,651 cycles
- System (JASC): [2430 · DC Generating System](https://openairdocs.org/jasc/2430)
- Part: Gcu
- Part number: 10200311
- Part serial: 1239
- Condition: Faulted
- Location: Dc Generator
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/COEA2009092501821

## Discrepancy

AIR TURN BACK DEPARTING NR 2 DC GENERATOR FAULTED IN FLIGHT.  ONE RESET WAS ATTEMPTED UNSUCCESSFULLY.  PILOT RETURNED TO DEPARTURE.  MX TROUBLESHOT SYS AND FOUND NR 2 GENERATOR CONTROL UNIT BAD.  REMOVED AND REPLACED NR 2 GCU.

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