What was found
DURNING DETAILED INSPECTION OF LEFT ENGINE, COMPRESSION CHECK OF NR4 CYLINDER REVEALED LOW COMPRESSION. APPROX 80/20, UPON FURTHER INSPECTION THE OUTER SPRING OF THE INTAKE VALVE WAS FOUND TO BE BROKEN.
- Difficulty date
- February 5, 2001
- Submitted
- February 5, 2001
- Operation
- General aviation
- Aircraft
- N305AT
- Make and model
- Cessna 402C
- Aircraft serial
- 402C0030
- Engine
- Cont TSIO520VB
- System (JASC)
- 8530 · Reciprocating Engine Cylinder Section
- Part
- Valve Spring
- Part number
- 637837
- Condition
- Broken
- Location
- Nr 4 Cylinder
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.