What was found
ONE SPARK PLUG CERAMIC WAS FOUND BROKEN. OTHERS WERE FOUND CRACKED. THESE SPARK PLUGS WERE MIS-FIRING DURING HIGH POWER OPERATION. NO DEFECT WAS NOTED DURING NORMAL GROUND ENGINE RUN UP MAGNETO CHECK.
- Difficulty date
- January 4, 2010
- Submitted
- February 26, 2010
- Operation
- General aviation
- Aircraft
- N888NK
- Make and model
- Lancar LC41550FG
- Aircraft serial
- 400411121
- Aircraft time
- 154 hours
- Engine
- Cont TSIO550C
- Engine time
- 154 hours
- System (JASC)
- 7421 · Spark Plug/Igniter
- Part
- Spark Plug
- Part number
- RHB32S
- Condition
- Broken
- Location
- Nr 4 Cylinder
- Part time
- 154 hours
- Stage of operation
- CR
- How discovered
- 9
- Nature of condition
- R, J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.