# SDR 20010517CW009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 27, 2001
- Submitted: May 17, 2001
- Operation: General aviation
- Aircraft: [N412WS](https://openairdocs.org/aircraft/N412WS), registered now
- Make and model: Cessna 177
- Registry model: [Cessna 177](https://openairdocs.org/model/cessna-177) (OpenAirDocs)
- Aircraft serial: 17701475
- Engine: Lyc O360*
- System (JASC): [2410 · Alternator-Generator Drive](https://openairdocs.org/jasc/2410)
- Part: Alternator
- Part number: DOFF10300J
- Part serial: A020612
- Condition: Seized
- Location: Engine
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/20010517CW009

## Discrepancy

ALTERNATOR OVERHAULED, INSTALLED ON AC.  FRONT BEARING BALL CAGE BROKE APART AND ALLOWED BALLS TO COLLECT ON ONE SIDE OF BEARING, LOCKING THE ALTERNATOR SHAFT.  FAILURE OCCURRED ON 2/10/2001 AFTER 126 HOURS TSOH.

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