# SDR 97ZZZX3813

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 3, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N6674F](https://openairdocs.org/aircraft/N6674F), registered now
- Make and model: Cessna 150F
- Registry model: [Cessna 150F](https://openairdocs.org/model/cessna-150f) (OpenAirDocs)
- Aircraft serial: 15063274
- Engine: Cont O200A
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Valve Seat
- Part number: 641793
- Condition: Carboned Up
- Location: Nr 2 Int Valve
- Stage of operation: CL
- Nature of condition: R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX3813

## Discrepancy

FOLLOWING TAKEOFF, ENGINE LOST POWER.  SAFE LANDING MADE.  INVESTIGATION FOUND NR 2 CYLINDER LOST POWER DUE TO VALVE SEAT CARBON BUILD-UP CAUSING COMPRESSION LOSS AND BLOWBY TO OTHER CYLINDERS.

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