# SDR 2003FA0001098

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 10, 2003
- Submitted: October 28, 2003
- Operation: General aviation
- Aircraft: N45288
- Make and model: Cessna 150M
- Registry model: [Cessna 150M](https://openairdocs.org/model/cessna-150m) (OpenAirDocs)
- Aircraft serial: 15076825
- Engine: Cont O200A
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Rocker Boss
- Part number: 641916CP
- Condition: Failed
- Location: Nr 3 Cylinder
- Part time: 2,531 hours
- Stage of operation: NR
- How discovered: O
- Nature of condition: R, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2003FA0001098

## Discrepancy

ON APRIL 19, FLYING BACK TO LGU, THE ENGINE SUDDENLY BEGAN VIBRATING AND LOST A LOT OF POWER. COULD NOT MAINTAIN ALTITUDE, LANDED IN A FIELD.  MECHANIC CAME AND FOUND THAT THE ROCKER BOSSES OF CYL NR 3 HAD FAILED.  INSTALLED AN NEW CYLINDER ASSY AND FLEW IT BACK.  WHERE THE OTHER 3 CYLINDERS WERE REPLACED TO PREVENT RECURRENCE.  PALANE WAS UNDAMAGED.

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