What was found
FOUND THREE CYLINDERS CRACKED BETWEEN THE SPARK PLUG AND INJECTOR HOLES. SUBMITTER STATED CRACKS MAY BE CAUSED BY OVERTORQUING THE INJECTOR NOZZLES OR POSSIBLY EXCESSIVE VIBRATION.
- Difficulty date
- October 17, 1995
- Submitted
- March 26, 2000
- Operation
- General aviation
- Aircraft
- N3380Q
- Make and model
- Cessna 421B
- Aircraft serial
- 421B0264
- Engine
- Cont GTSIO520H
- System (JASC)
- 8530 · Reciprocating Engine Cylinder Section
- Part
- Cylinder
- Part number
- 642344RB
- Condition
- Cracked
- Location
- Cyls 1,2,6
- 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.