# SDR CA971210003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 27, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Make and model: Doug DC3C-S1C3G
- Registry model: [Doug DC3C-S1C3G](https://openairdocs.org/model/douglas-dc3c-s1c3g) (OpenAirDocs)
- Engine: Pwa R183092
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Valve
- Condition: Cracked
- Location: Nr Cyl Exh
- Stage of operation: NR
- Nature of condition: E
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA971210003

## Discrepancy

(CAN) NR 2 ENGINE WAS REPORTED ROUGH RUNNING IN-FLIGHT.  POST-FLIGHT INSPECTION FOUND THE EXHAUST VALVE OF NR 3 CYLINDER WAS CRACKED.  THE NR 3 CYLINDER AND PISTON WERE REPLACED AND THE AIRCRAFT RETURNED TO SERVICE.

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