# SDR 2001FA0000462

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 17, 2001
- Submitted: November 2, 2001
- Operation: General aviation
- Aircraft: [N421CR](https://openairdocs.org/aircraft/N421CR), registered now
- Make and model: Cessna 421B
- Registry model: [Cessna 421B](https://openairdocs.org/model/cessna-421b) (OpenAirDocs)
- Aircraft serial: 421B0224
- Engine: Cont GTSIO520C
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Condition: Malfunctioned
- Location: Engine
- Stage of operation: NR
- How discovered: O
- Nature of condition: E
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2001FA0000462

## Discrepancy

LEFT ENGINE EXPERIENCED A VIBRATION.  PILOT ELECTED TO LAND .  REPLACED NR 2 CYLINDER.  CLEANED VALVE GUIDES ON REMAINING CYLINDERS.  REPLACED SPARK PLUG ON NR 1 CYLINDER.  FLIGHT CHECK GOOD.

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