# SDR ZF72020F00000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 9, 2019
- Submitted: February 4, 2020
- Operation: Air carrier
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Impulse Coupling
- Condition: Defective
- Location: Magneto
- Component: Magneto, Champion
- Component part number: 4330
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ZF72020F00000

## Discrepancy

THIS MAGNETO HAS A DEFECTIVE IMPULSE COUPLING.  THE PART NUMBER IMPULSE COUPLE IS M3068.  THE IMPULSE COUPLING RIVETS ARE LOOSE AND CAN CAUSE THE PAWLS TO FALL OFF INTO THE ENGINE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.