# SDR 99ZZZX956

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 3, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N2610M
- Make and model: Piper PA-28R-201T
- Registry model: [Piper PA-28R-201T](https://openairdocs.org/model/piper-pa-28r-201t) (OpenAirDocs)
- Aircraft serial: 28R7803137
- Engine: Cont TSIO360FB
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Retainer
- Part number: 631996
- Condition: Cracked
- Location: Rocker Shaft
- Part time: 205 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/99ZZZX956

## Discrepancy

UPON COMPLETION OF CSB 98-1A, FOUND THAT NR 2 CYLINDER EXHAUST ROCKER SHAFT RETAINER WAS CRACKED.  SUBMITTER SUGGESTED A POSSIBLE CAUSE IS OVERTORQUING OF ROCKER SHAFT RETAINER NUT OR MANUFACTURER DEFECT.

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