# SDR HUN2004FAAA

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 17, 2004
- Submitted: October 20, 2004
- Operation: Air carrier
- Aircraft: [N5331Y](https://openairdocs.org/aircraft/N5331Y), registered now
- Make and model: Piper PA-44-180
- Registry model: [Piper PA-44-180](https://openairdocs.org/model/piper-pa-44-180) (OpenAirDocs)
- Aircraft serial: 4496163
- Engine: Lyc LO360A1G6
- Propeller: Hartzl HCC2YR2
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Rotor
- Part number: M3513
- Condition: Sheared
- Location: Anti-Drive End
- Component: Magneto, Slick
- Component part number: 4302
- 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/HUN2004FAAA

## Discrepancy

COMPLETE FAILURE OF THE RT MAGNETO ON THE RT ENGINE.  THIS COMPLETE FAILURE OCCURRED TWICE WITH TWO MAGNETOS.  THE FIRST MAGNETO (SN 02071564) FAILED WITH A TOTAL TIME OF 529.1.  THE SECOND MAGNETO (SN 04041941) FAILED WITH A TOTOAL TIME OF 166.6.  BOTH FAILURES WERE THE RESULT OF THE ANTI-DRIVE END OF THE ROTOR, SHEARING OFF BELOW THE ROTOR GEAR(M3827) AT THE BASE OF THE CAM SLOT.

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