Service difficulty report · Control Unit · Bombdr DHC8402

Difficulty date
April 18, 2019
Submitted
April 22, 2019
Operation
Air carrier
Aircraft
N453QX
Make and model
Bombdr DHC8402
Aircraft serial
4489
Aircraft time
9,626 hours, 10,242 cycles
Propeller
Dowty R4086123F17
Part
Control Unit
Part number
697073003
Condition
Malfunctioned
Location
Nr 1 Propeller
Stage of operation
TO
How discovered
O
Nature of condition
R, J
Precautionary procedure
C

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

What was found

TAKE OFF ABORTED DUE TO NR 1 ENGINE TORQUE AT 97%, BUG 90% AIRSPEED, AT ABORT, BETWEEN 50-70 KTS. NO EXCESSIVE BRAKING. REMOVED FROM SERVICE. CDS INDICATED FAULT CODE 158 A/B. C/W EMU DOWNLOAD IAW T/C # 6773101. ACCOMPLISHED HIGH PWR RUN, DUPLICATED ORIGINAL DISCREPENCY. C/W ADDITIONAL EMU DOWNLOAD REF T/C 6773101. REPLACED PITCH CONTROL UNIT. RETURNED TO SERVICE.