# SDR NACA20020007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 16, 2002
- Submitted: February 18, 2002
- Operation: Air carrier
- Aircraft: [N43872](https://openairdocs.org/aircraft/N43872), registered now
- Make and model: Doug DC-6
- Registry model: [Doug DC-6](https://openairdocs.org/model/douglas-dc-6) (OpenAirDocs)
- Aircraft serial: 533294
- Aircraft time: 33,027 hours
- Engine: Pwa R2800*
- Engine time: 2,038 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Part number: 356993
- Part serial: A504VOPO
- Condition: Cracked
- Location: Nr 3 Engine
- Part time: 2,038 hours
- Stage of operation: CR
- 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/NACA20020007

## Discrepancy

FEATHERED NR 3 ENGINE DUE TO RAPID BACKFIRING.  REMOVED AND REPLACED NR 4 CYLINDER ON THE NR 3 ENGINE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.