# SDR QOF2011F00000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 11, 2011
- Submitted: August 12, 2011
- Operation: Air carrier
- Aircraft: [N744AK](https://openairdocs.org/aircraft/N744AK), registered now
- Make and model: Robsin R44RAVENII
- Aircraft serial: 10001
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Contact
- Part number: 10400507
- Condition: Defective
- Location: Rt Magneto
- Component: Magneto
- Component part number: 56LSC204T
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QOF2011F00000

## Discrepancy

TACHOMETER CONTACT ASSY SEEMS TO HAVE BREAKDOWN IN INSULATION AND STARTING TO FAIL IN 200 HRS OR LESS.  RESULTS IN UNWANTED POWER REDUCTION WHICH COULD RESULT IN LOSS OF ACFT AND LIFE.

---
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.