What was found
DURING ROUTINE MAINTENANCE (COMPRESSION CHECK) ENGINE 'LOCKED UP.' UPON INVESTIGATION/EXAMINATION, IMPULSE COUPLER PAWL AND PAWL AXIS FOUND EXTREMELY WORN ALLOWING IMPULSE COUPLING TO JAM INTERMITTENTLY WITH NO WARNING.
- Difficulty date
- March 13, 1996
- Submitted
- March 26, 2000
- Operation
- General aviation
- Aircraft
- N79301
- Make and model
- Cessna 172K
- Aircraft serial
- 17258030
- Engine
- Lyc O320E2D
- System (JASC)
- 7414 · Magneto/Distributor
- Part
- Impulse Coupler
- Condition
- Excess Wear
- Location
- Magneto
- Part time
- 115 hours
- Component
- Slick · 4371
- 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.