# SDR 2021FA0000189

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 20, 2021
- Submitted: June 30, 2021
- Operation: General aviation
- Aircraft: [N871SP](https://openairdocs.org/aircraft/N871SP), registered now
- Engine: Rotax ROTAX912ULS
- Engine time: 401 hours
- System (JASC): [7421 · Spark Plug/Igniter](https://openairdocs.org/jasc/7421)
- Part: Spark Plug
- Part number: DCPR8E
- Part serial: 4339
- Condition: Burned
- Location: Engine
- Part time: 401 hours
- Stage of operation: CR
- How discovered: C
- Nature of condition: R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2021FA0000189

## Discrepancy

BAD SPARK PLUG CAUSED A LOSS IN RPMS AND POWER.  ALL 8 SPARK PLUGS WERE REPLACED OUT OF AN ABUNDANCE OF CAUTION AND OPS CHECK WAS GOOD.

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