# SDR NACA20020039

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 28, 2002
- Submitted: August 28, 2002
- Operation: Air carrier
- Aircraft: N779TA
- Make and model: Doug DC-6
- Registry model: [Doug DC-6](https://openairdocs.org/model/douglas-dc-6) (OpenAirDocs)
- Aircraft serial: 45529
- Aircraft time: 37,379 hours
- Engine: Pwa R2800*
- Engine time: 971 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Part number: 356993
- Part serial: A219PWWO
- Condition: Cracked
- Location: Nr 4 Engine
- Part time: 971 hours
- Stage of operation: TX
- How discovered: O
- Nature of condition: R
- Precautionary procedure: E, D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NACA20020039

## Discrepancy

NR 4 ENGINE FEATHERED DUE TO BACKFIRING.  REMOVED AND REPLACED THE NR 18 CYLINDER.

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