# SDR NACA20010033

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 14, 2001
- Submitted: September 18, 2001
- 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: 533265
- Aircraft time: 32,820 hours
- Engine: Pwa R2800*
- Engine time: 1,242 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Part number: 356993
- Part serial: A649
- Condition: Cracked
- Location: Nr 2 Engine
- Part time: 1,242 hours
- Stage of operation: DE
- How discovered: O
- Nature of condition: R
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NACA20010033

## Discrepancy

NR 2 ENGINE RUNNING ROUGH, SUSPECT NR 4 CYLINDER.  REMOVED AND REPLACED THE NR 4 CYLINDER ASSY.

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