# SDR NACA20040042

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 1, 2004
- Submitted: October 4, 2004
- Operation: Air carrier
- Aircraft: N6174C
- Make and model: Doug DC-6A
- Registry model: [Doug DC-6A](https://openairdocs.org/model/douglas-dc-6a) (OpenAirDocs)
- Aircraft serial: 44075
- Aircraft time: 50,937 hours
- Engine: Pwa R2800CB3
- Engine time: 2,112 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Part number: 356993
- Part serial: A574
- Condition: Cracked
- Location: Nr 16
- Part time: 2,112 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: R, J
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NACA20040042

## Discrepancy

NR 2 ENGINE SHUT DOWN DUE TO BACKFIRING AND RUNNING ROUGH.  REPLACED NR 16 CYLINDER DUE TO A CRACKED HEAD.  CHECKED GOOD.

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