# SDR 2026FA0000040

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 2, 2025
- Submitted: January 19, 2026
- Operation: General aviation
- Aircraft: [N170WL](https://openairdocs.org/aircraft/N170WL), registered now
- Make and model: Parten P.68C
- Registry model: [Parten P.68C](https://openairdocs.org/model/partenavia-p-68c) (OpenAirDocs)
- Aircraft serial: 468C
- Aircraft time: 6,629 hours
- Engine: Lyc IO360A1B6
- Engine time: 244 hours
- Propeller: Hartzl HCC2YK2
- System (JASC): [7497 · Ignition System Wiring](https://openairdocs.org/jasc/7497)
- Part: Ignition Lead
- Part number: M4019
- Condition: Open
- Location: B4 Ignition Lead
- Part time: 244 hours
- Stage of operation: IN
- How discovered: C
- Nature of condition: R
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026FA0000040

## Discrepancy

DURING ENGINE RUN UP PRE MAINTENANCE MECHANIC NOTICED AN EXCESSIVE MAG DROP ON RT ENGINE LT MAG. CHECKED PLUGS AND MAG TIMING NO ISSUES NOTED. INSPECTED IGNITION LEADS AND FOUND B4 LEAD OPEN. IGNITION LEAD PHYSICAL INSPECTION IS GOOD. FAILED INTERNALLY AT 243.6 HOURS SINCE NEW

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