What was found
LOW COMPRESSION DURING A 100 HOUR INSPECTION, IN ONE CYLINDER (20/80) WAS OBSERVED. BORESCOPE INSPECTION SHOWED AN INTAKE VALVE THAT HAD LOST PART OF THE LIP THAT SEALS AGAINST THE VALVE SEAT.
- Difficulty date
- October 13, 2017
- Submitted
- October 13, 2017
- Operation
- General aviation
- Aircraft
- N123TM
- Make and model
- Cessna U206F
- Aircraft serial
- 20301768
- Aircraft time
- 14,301 hours
- Engine
- Cont IO520F
- Engine time
- 1,180 hours
- Propeller
- Hartzl HCC3YF1
- System (JASC)
- 8530 · Reciprocating Engine Cylinder Section
- Part
- Intake Valve
- Part number
- AEC539988
- Condition
- Chipped
- Location
- Nr 5 Cylinder
- Part time
- 1,180 hours
- Stage of operation
- IN
- How discovered
- B
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.