# SDR AU971467

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 18, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Bell 47J-2A
- Registry model: [Bell 47J-2A](https://openairdocs.org/model/bell-47j-2a) (OpenAirDocs)
- Engine: Lyc TVO435B1A
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Valve Seat
- Condition: Separated
- Location: Eng Nr 4 Cyl Exh
- Stage of operation: NR
- Nature of condition: E, R
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AU971467

## Discrepancy

(AUS) NO4 CYLINDER EXHAUST VALVE SEAT SEPARATED FROM CYLINDER. NO2 CYLINDER EXHAUST VALVE AND VALVE GUIDE UNSERVICEABLE. NO2 CYLINDER HEAD EXTENSIVELY CRACKED.

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