Service difficulty report · Bearing · Gruman G64

Difficulty date
June 13, 2003
Submitted
June 13, 2003
Operation
General aviation
Aircraft
N3629E
Make and model
Gruman G64
Aircraft serial
744B
Engine
Garrtt TPE3312201A
Engine time
5,262 hours
Part
Bearing
Part number
31030351
Part serial
MS981991435594
Condition
Disintegrated
Location
Torque Sensor
Part time
687 hours
Component
Torque Sensor · Alidsg
Component part number
31017262
Stage of operation
LD
How discovered
C
Nature of condition
X, J
Precautionary procedure
A

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

What was found

ENGINE SHUT DOWN IN FLIGHT, AIRCRAFT LANDED IN A FIELD SUFFERED SUBSTANTIAL DAMAGE. AN ENGINE TEARDOWN WAS CONDUCTED, THE TORQUE SENSOR GEAR BEARING HAD FAILED, THE BEARING HAD COME APART BITS AND PIECES OF THE CAGE AND BALLS WERE FOUND IN THE BOTTOM OF THE GEAR BOX. VERY LITTLE EVIDENCE OF HEAT, OUTER RACES WERE STILL SHINY.