What was found
THE EXHAUST VALVE GUIDE HAD .0035 INCH OF BUILD UP MATERIAL, CAUSING THE VALVE TO STICK OPEN, WHERE IT STRUCK THE PISTON. POSSIBLY DUE TO RICH MIXTURE. (K)
- Difficulty date
- December 21, 2005
- Submitted
- January 6, 2006
- Operation
- General aviation
- Aircraft
- N4676U
- Make and model
- Cessna U206G
- Aircraft serial
- U20604352
- Engine
- Cont IO520F
- System (JASC)
- 8530 · Reciprocating Engine Cylinder Section
- Part
- Exhaust Valve
- Condition
- Stuck
- Location
- Engine
- Part time
- 376 hours
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.