What was found
CYLINDER REMOVED DUE TO LOW COMPRESSION AT INSPECTION. EXHAUST VALVE CRACKED AND DISPLAYS EVIDENCE OF HEAT DAMAGE. THE VALVE SEAT ALSO SHOWED SIGNS OF WEAR.
- Difficulty date
- July 11, 2016
- Submitted
- August 3, 2016
- Operation
- Air carrier
- Aircraft
- N300SN
- Make and model
- Cessna 402C
- Aircraft serial
- 402C0060
- Aircraft time
- 21,513 hours
- Engine
- Cont TSIO520VB
- System (JASC)
- 8530 · Reciprocating Engine Cylinder Section
- Part
- Exhaust Valve
- Condition
- Cracked
- Location
- Nr 6 Cylinder
- Part time
- 1,866 hours
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.