# SDR 95ZZZX1166

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 16, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N88604](https://openairdocs.org/aircraft/N88604), registered now
- Make and model: Cessna 421C
- Registry model: [Cessna 421C](https://openairdocs.org/model/cessna-421c) (OpenAirDocs)
- Aircraft serial: 421C0604
- Engine: Cont GTSIO520L
- System (JASC): [8540 · Reciprocating Engine Rear Section](https://openairdocs.org/jasc/8540)
- Part: Shaft Gear
- Part number: 643257
- Condition: Failed
- Location: Starter Clutch
- Part time: 429 hours
- Component: 643259A5
- 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/95ZZZX1166

## Discrepancy

DURING DISASSEMBLY OF THIS ENGINE, THE 'NEW STYLE' STARTER CLUTCH (REF:  SB M92-10) GEAR GEETH WERE STARTING TO FAIL.  ALSO, REF:  CRITICAL SB 94-4.

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