# SDR NACA200000007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 1, 2000
- Submitted: June 26, 2000
- Operation: Air carrier
- Aircraft: [N2907F](https://openairdocs.org/aircraft/N2907F), registered now
- Make and model: Doug DC-6A
- Registry model: [Doug DC-6A](https://openairdocs.org/model/douglas-dc-6a) (OpenAirDocs)
- Aircraft serial: 44636
- Aircraft time: 31,615 hours
- Engine: Pwa R2800*
- Engine time: 1,592 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Part number: 3563993
- Part serial: 4591
- Condition: Cracked
- Location: Nr 3 Engine
- Component: Engine, Pwa, R2800CB3
- Component part number: R2800CB3
- Stage of operation: CR
- 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/NACA200000007

## Discrepancy

NR 3 ENGINE, PRECAUTIONARY SHUTDOWN DUE TO BACKFIRING IN CRUISE AT 2336Z.  REPLACED CYLINDER ASSY.

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