What was found
INTAKE VALVE IN NR 4 CYLINDER FAILED IN FLIGHT. THE VALVE FACE BROKE IN 3 PIECES. THE QUILL SHAFT BROKE AND SHUTDOWN THE ENGINE. THIS IS 3RD ONE SEEN WITH 400-500 HOURS IN SERVICE. (K)
- Difficulty date
- November 17, 2004
- Submitted
- February 11, 2005
- Operation
- General aviation
- Aircraft
- N111KJ
- Make and model
- Cessna 421C
- Aircraft serial
- 421C1230
- Engine
- Cont GTSIO520*
- System (JASC)
- 8530 · Reciprocating Engine Cylinder Section
- Part
- Intake Valve
- Part number
- 655783
- Condition
- Broken
- Location
- Nr 4 Cylinder
- Part time
- 492 hours
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- R, J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.