# SDR 95ZZZX5750

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 24, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N290MP](https://openairdocs.org/aircraft/N290MP), registered now
- Make and model: Gulstm 680FL
- Aircraft serial: 1553104
- Engine: Lyc IGSO540B1C
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Part number: LW12717
- Condition: Defective
- Location: Exhaust Valve
- Part time: 191 hours
- Stage of operation: CL
- Nature of condition: E, R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZX5750

## Discrepancy

JUST AFTER TAKEOFF, THE LEFT ENGINE BEGAN TO RUN ROUGH.  THE AIRCRAFT RETURNED FOR LANDING AND A COMPRESSION CHECK WAS PERFORMED.  THE NR 6 CYLINDER HAD LOW COMPRESSION DUE TO LEAKAGE PAST THE EXHAUST VALVE.  THE EXHAUST VALVE APPEARED NORMAL EXCEPT FOR DISCOLORIZATION FROM HEAT.

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