# SDR 97ZZZX2620

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 1, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N5246E
- Make and model: Cessna A185F
- Registry model: [Cessna A185F](https://openairdocs.org/model/cessna-a185f) (OpenAirDocs)
- Aircraft serial: 18503943
- Engine: Cont IO520D
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Condition: Studs Fail
- Location: Nr 4
- Part time: 779 hours
- Stage of operation: CR
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX2620

## Discrepancy

PILOT HEARD AND FELT ABRUPT CHANGE IN ENGINE 10 MINUTES INTO FLIGHT.  UNEVENTFUL RETURN TO BASE WITH ENGINE INSTRUMENTS NORMAL.  NR 4 CYLINDER HAD SHEARED ALL 8 STUDS AND HAD SEPARATED .50 INCH FROM CASE.  ENGINE HAD HISTORY OF PROP STRIKE TEAR-DOWN 460 HRS PRIOR TO FAILURE.

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