What was found
MAGNETO POINTS WERE NOT OPENING DUE TO EXCESSIVE WEAR ON THE POINTS' CAM FOLLOWER. THIS WEAR WAS ACCELERATED BY A HEAT BUILD-UP ON THE MAGNETO SHAFT GENERATED BY A FAILED REAR BEARING.
- Difficulty date
- August 12, 1996
- Submitted
- March 26, 2000
- Operation
- General aviation
- Aircraft
- N4949G
- Make and model
- Cessna 172N
- Aircraft serial
- 17273496
- Engine
- Lyc O320H2AD
- System (JASC)
- 7414 · Magneto/Distributor
- Part
- Bearing
- Part number
- 1035110
- Condition
- Failed
- Location
- Mag Rear
- Component
- D4RN1021
- Stage of operation
- IN
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.