# SDR NAFA20040001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 28, 2004
- Submitted: March 1, 2004
- Operation: Air carrier
- Aircraft: [N7780B](https://openairdocs.org/aircraft/N7780B), registered now
- Make and model: Doug DC-6A
- Registry model: [Doug DC-6A](https://openairdocs.org/model/douglas-dc-6a) (OpenAirDocs)
- Aircraft serial: 45372
- Aircraft time: 22,309 hours
- Engine: Pwa R2800CB3
- Engine time: 1,544 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Pushrod
- Part number: 33641
- Condition: Bent
- Location: Cylinder
- Part time: 1,544 hours
- Component: Cylinder, Pwa
- Component part number: 356994
- Stage of operation: AP
- How discovered: O
- Nature of condition: R
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NAFA20040001

## Discrepancy

NR 3 ENGINE PRECAUTIONARY SHUT DOWN DUE TO NR 3 CYLINDER DOUBLE SHORTED SECONDARY.  REPLACED BOTH INTAKE AND EXHAUST PUSH RODS AND ADJUSTED VALVES.  OP CHECKED GOOD.

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