# SDR 2012FA0000277

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2012
- Submitted: May 4, 2012
- Operation: General aviation
- Aircraft: [N14AE](https://openairdocs.org/aircraft/N14AE), registered now
- Make and model: Maule M-7-260C
- Registry model: [Maule M-7-260C](https://openairdocs.org/model/maule-m-7-260c) (OpenAirDocs)
- Aircraft serial: 30012C
- Engine: Lyc IO540*
- System (JASC): [7421 · Spark Plug/Igniter](https://openairdocs.org/jasc/7421)
- Part: Spark Plug
- Part number: REM38S
- Condition: Mismanufactured
- Location: Engine
- Part time: 205 hours
- Stage of operation: IN
- How discovered: 9
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2012FA0000277

## Discrepancy

INSTALLED NEW MFG FINE WIRE PLUGS IN FEB 2010 AT 1260 HRS TT.  NOTICED A PROBLEM WITH THE RESISTORS IN A FEW OF THE PLUGS.  NOTICED HARD STARTING WHEN HOT.  AT ANNUAL INSPECTION, 7 OF 12 PLUGS HAD FAILED, THE RESISTORS WERE COMPLETELY OPEN AND REGISTERED 1 ON THE OHM METER.  THE OTHER 5 WERE HIGH, 1 AT 36,000.  THEY WERE ALL REMOVED AND REPLACED.

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