# SDR 2013FA0000019

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 2012
- Submitted: January 11, 2013
- Operation: General aviation
- Aircraft: N2252J
- Make and model: Cessna 150G
- Registry model: [Cessna 150G](https://openairdocs.org/model/cessna-150g) (OpenAirDocs)
- Aircraft serial: 15065452
- Engine: Cont O200A
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Boss
- Part serial: 614406
- Condition: Cracked
- Location: Rocker Shaft
- 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/2013FA0000019

## Discrepancy

ROCKER SHAFT BOSSES FOUND CRACKED WHEN CYLINDER REMOVED DUE TO FAILURE.  LAST DYE CHECK WAS DONE IN 5/6/2007 (O/H DATE 1998).  CYLINDER ONLY HAD 50 HRS SINCE LAST INSPECTION,  BUT 5 YEARS CALENDAR TIME.  POSSIBLE MORE FREQUENT DYE CHECK ON ROCKER BOSSES FOR AD 94-05-05R1 ON OLDER CYLINDERS.

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