Service difficulty report · Gearbox · Dhav DHC8102

Difficulty date
December 10, 2000
Submitted
February 1, 2001
Operation
Air carrier
Make and model
Dhav DHC8102
Aircraft time
36,323 hours
Engine
Pwa PW120A
Propeller
Hamstd 14SF7
Part
Gearbox
Condition
Making Metal
Location
Engine
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
E

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

What was found

(CAN) FOLLOWING ENGINE START F/C NOTICED THAT THERE WAS NO HYDRAULIC PRESSURE. THE PROBELM APPEARED TO BE A BROKEN BYDRAULIC PUMP DRIVE SHAFT. A NEW PUMP WAS INSTALLED AND THE SHAFT ON THIS ONE SHEARED WHEN THE ENGINE WAS STARTED. THE RGB CHIP DETECTOR WAS INSPECTED AND FOUND TO BE FLAGGED UPON FURTHER INVESTIGATION LARGE QUANTITIES OF A1 AND FERROUS METAL WAS FOUND INCLUDING A GEAR SEGMENT APPROXIMATELY 1 INCH LONG CONTAINING 4 GEAR TEETH. AWAITING ENGINE TEARDOWN REPORT FROM PW&C.2001-01-22TC: AWAITING ENGINE TEARDOWN REPORT FROM OPERATOR