# SDR NACA20030100

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 2, 2003
- Submitted: August 4, 2003
- Operation: Air carrier
- Aircraft: [N2907F](https://openairdocs.org/aircraft/N2907F), registered now
- Make and model: Doug DC-6
- Registry model: [Doug DC-6](https://openairdocs.org/model/douglas-dc-6) (OpenAirDocs)
- Aircraft serial: 44636
- Aircraft time: 34,911 hours
- Engine: Pwa R2800CB3
- Engine time: 941 hours
- System (JASC): [7421 · Spark Plug/Igniter](https://openairdocs.org/jasc/7421)
- Part: Spark Plug
- Part number: URHB32E
- Condition: Cracked
- Location: Engine
- Part time: 461 hours
- Stage of operation: CL
- How discovered: O
- Nature of condition: R
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NACA20030100

## Discrepancy

NR 4 ENGINE SHUT DOWN DUE TO NR 2 CYLINDER DOUBLE SHORTED SECONDARY. REPLACED NR 4 ENGINE NR 2 CYLINDER FRONT AND REAR SPARK PLUGS.

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