# SDR YN8R10676

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 17, 2010
- Submitted: May 17, 2010
- Operation: General aviation
- Aircraft: N10204
- Make and model: Lancar LC42550FG
- Aircraft serial: 421020
- Aircraft time: 17 hours
- Engine: Cont IO550N
- Engine time: 17 hours
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Magneto
- Part number: 105005561
- Part serial: D08JA296
- Condition: Faulty
- Location: Engine
- Part time: 17 hours
- Stage of operation: TX
- How discovered: O
- Nature of condition: R
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YN8R10676

## Discrepancy

(YN8R)  UPON PERFORMING ENGINE RUN-UP, ENGINE PERFORMANCE NOTED UNSATISFACTORY.  PROBLEM ISOLOATED BY MX TO BE SEVERELY RETARDED TIMING VALUES ON BOTH MAGNETOS.  SUSPECT BROKEN OR MIS ASSEMBLED IMPULSE COUPLING SPRINGS IN BOTH MAGNETOS.  AWAITING TEAR-DOWN REPORT FOR DETAILS.  PARTS UNDER WARRANTY AND UNABLE TO DISASSEMBLE PRIOR TO RETURNING TO MFG.  BOTH MAGS SAME PN, MAGNETO SN'S: D08JA296 AND D08JA286

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