What was found
EXHAUST VALVE IN NR 4 CYLINDER STUCK IN FLIGHT CAUSING THE EXHAUST PUSH ROD TO BEND AND BREAK. THE PUSH ROD TUBE ALSO BROKE ALLOWING ENG OIL TO ESCAPE. THERE WAS A DRASTIC LOSS OF ENG OIL AND ENG OIL PRESSURE.
- Difficulty date
- December 11, 2018
- Submitted
- December 11, 2018
- Operation
- General aviation
- Aircraft
- N830KS
- Make and model
- Cessna 172S
- Aircraft serial
- 172S11106
- Engine
- Lyc IO360L2A
- Propeller
- Mcauly 1A170E
- System (JASC)
- 8530 · Reciprocating Engine Cylinder Section
- Part
- Exhaust Valve
- Part number
- LW19001
- Condition
- Stuck
- Location
- Nr 4 Cylinder
- 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.