What was found
DURING A SCHEDULED INSPECTION, FOUND THAT THE NR 4 CYLINDER HAD LOW COMPRESSION. INVESTIGATION FOUND THAT THE EXHAUST VALVE FACE AND EXHAUST SEAT INTERFACE SHOWED EXCESSIVE WEAR CAUSING THE EXHAUST VALVE FACE TO CUP.
- Difficulty date
- October 4, 2017
- Submitted
- March 26, 2018
- Operation
- General aviation
- Aircraft
- N561PU
- Make and model
- Piper PA28161
- Aircraft serial
- 2842103
- Aircraft time
- 9,247 hours
- Engine
- Lyc O320D3G
- Engine time
- 9,406 hours
- System (JASC)
- 8530 · Reciprocating Engine Cylinder Section
- Part
- Cylinder
- Part number
- LW12416
- Condition
- Cracked
- Location
- Nr 4
- Part time
- 950 hours
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.