What was found
EXHAUST VALVE GUIDE BROKE UP LETTING THE EXHAUST VALVE LOOSEN IN THE CYLINDER. EXHAUST VALVE DID NOT FAIL. PIECES FROM THE GUIDE JAMMED THE TURBOCHARGER TURBINE WHEEL DESTROYING THE TURBOCHARGER AND CAUSING LOSS OF POWER.
- Difficulty date
- April 1, 1997
- Submitted
- March 26, 2000
- Operation
- General aviation
- Aircraft
- N5691Y
- Make and model
- Enstrm F28C
- Aircraft serial
- 4792
- Engine
- Lyc HIO360E1BD
- System (JASC)
- 8530 · Reciprocating Engine Cylinder Section
- Part
- Valve Guide
- Part number
- 75838
- Condition
- Failed
- Location
- Nr 4 Cylinder
- Part time
- 566 hours
- Stage of operation
- NR
- Nature of condition
- E, R
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.