# SDR 97ZZZX3153

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 13, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N421Z](https://openairdocs.org/aircraft/N421Z), registered now
- Make and model: Cessna 421
- Registry model: [Cessna 421](https://openairdocs.org/model/cessna-421) (OpenAirDocs)
- Aircraft serial: 4210077
- System (JASC): [2434 · DC Generator-Alternator](https://openairdocs.org/jasc/2434)
- Part: Alternator
- Part number: ALV9510
- Condition: Failed
- Location: Dc System
- Component: Prestolite
- Stage of operation: NR
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX3153

## Discrepancy

ALTERNATOR FAILED AFTER 136.6 HOURS OF OPERATION.  OVERHAULED 10-3-96.  SUBMITTER STATED CONTINUE TO HAVE SHORT SERVICE LIFE ON THESE UNITS.

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