SDR 97ZZZX770

Service difficulty report · Bearing

Difficulty date
November 5, 1996
Submitted
March 26, 2000
Operation
General aviation
Filed by
DSCR311D
National Flight Services Inc
Engine
Garrtt TPE33112UHR
Part
Bearing
Part number
31010922
Condition
Failed
Location
Turbine Aft
Part time
6,864 hours
Component
310331923
Stage of operation
NR
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

REAR TURBINE BEARING FAILED RESULTING IN MOVEMENT OF MAIN ROTATING GROUP. SECONDARY DAMAGE INCLUDED SEVERE RUBBING OF ALL ROTATING COMPONENTS DUE TO FREE MOVEMENT OF MAINSHAFT CAUSED BY BEARING FAILURE. IMPACT DAMAGE ALSO AFFECTED EXHAUST GAS TEMPERATURE HARNESS. BEARING FAILURE ALSO RESULTED IN OIL SYSTEM METAL CONTAMINATION. PART TOTAL CYCLES, 7,084.