# SDR CA030922004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 22, 2003
- Submitted: October 15, 2003
- Operation: General aviation
- Make and model: Piper PA-31-350
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (OpenAirDocs)
- Aircraft time: 19,263 hours
- Engine: Lyc TIO540J2BD
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Stud
- Condition: Broken
- Location: Nr 2 Nacelle
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA030922004

## Discrepancy

(CAN) DURING 100 HR. INSPECTION THE NR 2 ENGINE COWL WAS REMOVED. WHEN THE COWL WAS LOWERED TWO NUTS WITH HALF THE STUDS FELL OUT ONE 3/8 INCH AND ONE 1/2 INCH. AFTER FURTHER INSPECTION IT WAS NOTICED THAT THE NR 2 CYL HOLD DOWN STUDS ON THE LOWER HALF OF THE CYL WAS MISSING. WHEN THE CYL. WAS REMOVED IT WAS NOTED THAT THE CYL HAD A LARGE CRACK BETWEEN THE TOP SPARK PLUG HOLE TO THE EXHAUST VALVE. THE PARTS HAVE BEEN SENT OFF TO TSB TO DETERMINE THE REASON FOR BREAKAGE.

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