# SDR 2011F00153

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 11, 2011
- Submitted: July 29, 2011
- Operation: General aviation
- Aircraft: [N638FT](https://openairdocs.org/aircraft/N638FT), registered now
- Make and model: Piper PA-28-161
- Registry model: [Piper PA-28-161](https://openairdocs.org/model/piper-pa-28-161) (OpenAirDocs)
- Aircraft serial: 2842315
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Shaft
- Condition: Failed
- Location: Cam Follower
- Component: Magneto
- Component part number: 4371
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2011F00153

## Discrepancy

ACFT WAS WRITTEN UP FOR POWER LOSS.  LT AND RT MAGS WERE PULLED.  TACH TIME ON BOTH MAGS, 933.5.  INSPECTION REVEALED LT MAG CAM FOLLOWER SHAFT BROKEN.  BOTH MAGS HAD OIL GETTING PAST OIL SEAL AS A RESULT, POINTS WERE PITTED, MAG WERE REPLACED.

---
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.