# SDR 8HBR20240909067

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 2024
- Submitted: September 9, 2024
- Operation: General aviation
- Filed by: [Hillsboro Aero Academy LLC, repair station 8HBR698C](https://openairdocs.org/faa-repair-station/8HBR698C/hillsboro-aero-academy-llc.md) (OpenAirDocs)
- Aircraft: [N90558](https://openairdocs.org/aircraft/N90558), registered now
- Make and model: Cessna 172P
- Registry model: [Cessna 172P](https://openairdocs.org/model/cessna-172p) (OpenAirDocs)
- Aircraft serial: 17274773
- Aircraft time: 17,185 hours
- Engine: Lyc O320D2J
- Engine time: 490 hours
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Gear
- Part number: M3827
- Condition: Damaged
- Location: Magneto
- Part time: 490 hours
- Component: Magneto, Slick
- Component part number: 4371
- Stage of operation: IN
- How discovered: V
- Nature of condition: P
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/8HBR20240909067

## Discrepancy

CAM GEAR WAS IMPROPERLY INSTALLED/SEATED DURING INITIAL MANUFACTURING WHICH CAUSED EXCESSIVE WEAR AND DAMAGE TO THE CAM GEAR DURING ROTATION AGAINST THE DISTRIBUTOR GEAR. THIS WAS THE FIRST 500HR INSPECTION SINCE MANUFACTURE.

---
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.