Service difficulty report · Towershaft · Aerosp ATR42*

Difficulty date
May 3, 1996
Submitted
March 26, 2000
Operation
General aviation
Make and model
Aerosp ATR42*
Engine
Pwa PW121
Part
Towershaft
Part number
311196801
Condition
Fractured
Location
Upper Shoulder
Part time
10,813 hours
Stage of operation
CR
Nature of condition
Y
Precautionary procedure
A

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

What was found

(CAN)IN CRUISE, LOSS OF OIL PRESSURE AND ENGINE STOPPED. THE TOWERSHAFT FRACTURED IMMEDIATELY BELOW THE UPPER BEVEL GEAR AND BEARING. THIS RESULTED IN LOSS OF DRIVE TO BOTH THE FUEL PUMP AND THE OIL PUMP, THUS SHUTTING DOWN THE ENGINE. REASON FOR THE FAILURE COULD NOT BE ASCERTAINED.

More about the Aerosp ATR-42