# SDR NAFA20010002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 23, 2001
- Submitted: July 24, 2001
- 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: 21,480 hours
- Engine: Pwa R2800CB3
- Engine time: 2,089 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Part number: 356994
- Part serial: RA354
- Condition: Cracked
- Location: Nr 4 Engine
- Part time: 381 hours
- Stage of operation: TO
- How discovered: O
- Nature of condition: E, R
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NAFA20010002

## Discrepancy

NR 4 ENGINE RUNS ROUGH AND ANALYZER SHOWED LOW COMPRESSION.  REPLACED NR 3 CYLINDER.

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