SDR 97ZZZX1582

Service difficulty report · Spring

Difficulty date
March 10, 1997
Submitted
March 26, 2000
Operation
General aviation
Filed by
WTXR173J
West Star Aviation, LLC
Engine
Cont GTSIO520M
Part
Spring
Part number
637836
Condition
Broken
Location
Valve
Part time
1,014 hours
Stage of operation
IN
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

ENGINE WAS RECEIVED AT FACILITY FOR INSPECTION DUE TO METAL CONTAMINATION. UPON DISASSEMBLY OF THE CYLINDERS, NOTED THERE WAS ONE BROKEN VALVE SPRING ON EACH CYLINDER IN THE INTAKE POSITION. CYLINDERS NR 1, NR 3, AND NR 4 HAD BROKEN INNER VALVE SPRINGS AND CYLINDERS NR 2, NR 5, AND NR 6 HAD BROKEN OUTER VALVE SPRINGS. THE SPRING ON NR 3 CYLINDER APPEARED TO HAVE BEEN BROKEN FOR SOME TIME AND WAS THE SOURCE OF THE METAL CONTAMINATION IN THE ENGINE.