# SDR AUS20020421

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 30, 2002
- Submitted: June 13, 2002
- Operation: Air carrier
- Make and model: Cessna U206G
- Registry model: [Cessna U206G](https://openairdocs.org/model/cessna-u206g) (OpenAirDocs)
- Engine: Cont IO520F
- Propeller: Mcauly D3A34C404
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Exhaust Valve
- Part number: SA52000
- Condition: Failed
- Location: Engine
- Part time: 1,299 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AUS20020421

## Discrepancy

(AUS) NR 4 CYLINDER EXHAUST VALVE LEAKING. INVESTIGATION FOUND EROSION AROUND THE HEAD OF THE EXHAUST VALVE AS WELL AS LEAKING AT THE VALVE SEAT SEALING FACE.

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