What was found
(CAN) NR 1 TOP SPARK PLUG INSULATOR FOUND BROKEN UNDER ELECTRODES. REPLACED NR 1 TOP SPARK PLUG, REMAINING PLUGS FOR LT MAGNETO CLEANED AND FUNCTION TESTED. GROUND RUN CARRIED OUT, LT MAGNETO OPERATION NORMAL.
- Difficulty date
- December 22, 2004
- Submitted
- March 3, 2005
- Operation
- General aviation
- Make and model
- Cessna 172R
- Aircraft time
- 2,663 hours
- Engine
- Lyc IO360L2A
- System (JASC)
- 7421 · Spark Plug/Igniter
- Part
- Spark Plug
- Part number
- REM38E
- Condition
- Cracked
- Location
- Engine
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- E, R, J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.