# SDR 98ZZZX1286

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 20, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N5151A](https://openairdocs.org/aircraft/N5151A), registered now
- Make and model: Cessna O-2A
- Registry model: [Cessna O-2A](https://openairdocs.org/model/cessna-o-2a) (OpenAirDocs)
- Aircraft serial: 68873
- System (JASC): [2410 · Alternator-Generator Drive](https://openairdocs.org/jasc/2410)
- Part: Drive
- Part number: 635796
- Condition: Worn
- Location: Alternator
- Component: Prestolite
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZX1286

## Discrepancy

C/W SB 95-3A TCM ALT/GEN DRIVE INSPECTION.  FOUND BOTH ALT ONE-PIECE DRIVES WORN.  INSIDE BORE WORN OUT OF ROUND.  WOODRUF KEY SLOT TWICE AS WIDE AS KEY.  KEY NEARLY WORN IN TWO.  FOUND WEAR STEP AND EVIDENCE OF FATIGUE CRACKING ON BOTH SHAFTS NEITHER SHAFT SERVICEABLE.

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