What was found
DURING ROUTINE 100 HR INSPECTION 4 SPARK PLUGS ON RIGHT ENGINE FOUND TO HAVE CRACKS IN THE PLUG BODY BETWEEN THE GASKET SURFACE AND THE WRENCH HEX.
- Difficulty date
- September 15, 2003
- Submitted
- September 25, 2003
- Operation
- General aviation
- Aircraft
- N421GC
- Make and model
- Cessna 421B
- Aircraft serial
- 421B0926
- Engine
- Cont GTSIO520H
- Engine time
- 4,526 hours
- System (JASC)
- 7421 · Spark Plug/Igniter
- Part
- Spark Plug
- Part number
- URHB32E
- Part serial
- NA
- Condition
- Cracked
- Location
- Engine
- Part time
- 177 hours
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.