# SDR 97ZZZX31

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 20, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N872FE](https://openairdocs.org/aircraft/N872FE), registered now
- Make and model: Cessna 208B
- Registry model: [Cessna 208B](https://openairdocs.org/model/cessna-208b) (OpenAirDocs)
- Aircraft serial: 208B0200
- System (JASC): [2436 · DC Regulator](https://openairdocs.org/jasc/2436)
- Part: Gcu
- Part number: 51539012
- Condition: Failed
- Location: Start/Gen
- Part time: 455 hours
- Component: 200SGL119Q
- Stage of operation: CR
- Nature of condition: J, H
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX31

## Discrepancy

PILOT REPORTED WHILE EN ROUTE FROM ONT TO SBA, THE RED GENERATOR OFF LIGHT ILLUMINATED.  THE STAND-BY ALTERNATOR DID NOT COME ON LINE.  THE STAND-BY ELECTRICAL POWER ON LIGHT NOR THE STAND-BY ELECTRICAL POWER OFF LIGHT ILLUMINATED.  THE AIRCRAFT WAS OPERATING ON BATTERY POWER ONLY.  THE PILOT ELECTED TO PERFORM A PRECAUTIONARY LANDING IN OXR.  MAINTENANCE WAS DISPATCHED TO THE AIRCRAFT AND CONFIRMED A GCU FAILURE.  THE GCU WAS REPLACED, ADJUSTED AND OPERATIONALLY CHECK GOOD.  THE STAND-BY ALTERNATOR SYSTEM WAS FUNCTIONALLY CHECKED AND NO DISCREPANCIES WERE FOUND.  THE AIRCRAFT WAS RETURNED TO SERVICE AND FLOWN TO FAT WITH NO DEVIATIONS.

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