# SDR NACA2001011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 1, 2001
- Submitted: March 7, 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: 44636
- Aircraft time: 32,383 hours
- Engine: Pwa R2800CB3
- Engine time: 2,360 hours
- System (JASC): [7421 · Spark Plug/Igniter](https://openairdocs.org/jasc/7421)
- Part: Spark Plug
- Part number: RHB32E
- Condition: Defective
- Location: Nr 12 Cylinder
- Component: Engine, Pwa, CB3
- Component part number: R2800
- Stage of operation: TX
- How discovered: O
- Nature of condition: E, R
- Precautionary procedure: E, D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NACA2001011

## Discrepancy

ON RUNUP NR 3 ENGINE RUNNING ROUGH, 12 BMEP MAG DROP, (LEFT MAG).  REPLACED NR 12L SPARK PLUG AND SHORT LEAD.

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