# SDR NACA20010006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 25, 2001
- Submitted: January 26, 2001
- Operation: Air carrier
- Aircraft: N99330
- Make and model: Doug DC-6A
- Registry model: [Doug DC-6A](https://openairdocs.org/model/douglas-dc-6a) (OpenAirDocs)
- Aircraft serial: 43576
- Aircraft time: 26,557 hours
- Engine: Pwa R2800CB3
- Engine time: 1,360 hours
- System (JASC): [7421 · Spark Plug/Igniter](https://openairdocs.org/jasc/7421)
- Part: Spark Plug
- Part number: RHB32E
- Condition: Shorted
- Location: Nr 8 Cylinder
- Component: Engine, Pwa
- Stage of operation: CR
- 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/NACA20010006

## Discrepancy

FEATHERED THE NR 3 ENGINE DUE TO BACKFIRING, DOUBLE SHORTED SECONDARY, NR 8 CYLINDER.  REPLACED BOTH SPARK PLUGS.

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