# SDR 99ZZZX341

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 10, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N51703](https://openairdocs.org/aircraft/N51703), registered now
- Make and model: Enstrm 280C
- Aircraft serial: 1118
- Engine: Lyc HIO360E1AD
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Stud
- Part number: ECLN12988CN
- Condition: Damaged
- Location: Cylinder
- Part time: 100 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX341

## Discrepancy

DURING ANNUAL INSPECTION, 10-10-97, NR 2 CYLINDER COMPRESSION LOW.  AFTER INSPECTION OF CYLINDER, FOUND INTAKE VALVE SEAT LOOSE AND VALVE BURNT.  SUBMITTER STATED POSSIBLE CAUSE MAY HAVE BEEN OVERBOOSTING ENGINE DURING FLIGHT INSTRUCTION.

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