Service difficulty report · Signal Cond Unit · Dhav DHC8301

Difficulty date
December 30, 2011
Submitted
September 14, 2015
Operation
General aviation
Make and model
Dhav DHC8301
Engine
Pwa PW123
Part
Signal Cond Unit
Condition
Malfunctioned
Location
Engine
Stage of operation
TO
How discovered
O
Nature of condition
J
Precautionary procedure
C

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

What was found

(CAN) DURING T/O ROLL, AN UNCOMMANDED AUTOFEATHER OCCURRED RESULTING IN AN OVERTORQUE. THE FDR DATA CONFIRMED THE OVERTORQUE AND THE TORQUE SIGNAL CONDITIONER UNIT FAULT INDICATOR WAS TRIGGERED. TROUBLESHOOTING IS ON-GOING.