Service difficulty report · Tower Shaft

Difficulty date
July 4, 1996
Submitted
March 26, 2000
Operation
General aviation
Engine
Pwa PW120A
Part
Tower Shaft
Condition
Fractured
Location
Accessory Gearbx
Part time
1,513 hours
Stage of operation
CR
Nature of condition
J, Y
Precautionary procedure
E

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

What was found

(CAN) DURING CRUISE THE #2 ENGINE TORQUE DROPPED TO ZERO AND THE LOW OIL PRESSURE LIGHT CAME ON. THE ENGINE WAS SHUTDOWN. POST FLIGHT INSPECTION FOUND LARGE PIECES OF METAL IN THE OIL TANK CHIP DETECTOR. THE METAL CONTAMINATION WAS A RESULT OF THE FRACTURE OF THE BEVEL GEAR OF THE ACCESSORY GEARBOX TOWER SHAFT.