Service difficulty report · Wire · Bombdr DHC8400

Difficulty date
November 18, 2014
Submitted
March 12, 2015
Operation
General aviation
Make and model
Bombdr DHC8400
Engine
Pwc PW150A
Part
Wire
Condition
Burned
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

(CAN) PILOT REPORTED LT AUXILIARY PUMP INOPERATIVE. AUXILIARY PUMP CIRCUIT BREAKER DISCOVERED TRIPPED. AUXILIARY PUMP CIRCUIT BREAKER RESET, DEFECT PERSISTS. T/S AND REPLACED THE PUMP BUT THE NEW PUMP ALSO DIDN`T WORKED AND WIRING MEASUREMENTS WERE NOT SATIS. THEY FOUND DURING THE WIRING MEASUREMENT ON PHASE ON WIRING MISSING. FURTHER T/S LED TO A RELAY FAILURE OF RELAY 2800-K1. NOW THEY FOUND DAMAGED WIRES BETWEEN CONNECTORS J147 PINS A,H,B AND P22 PINS R, P, N. WIRE FAULT IS UNDER FLOOR CROSSOVER AFT OF COCKPIT WALL. BURNT WIRES FOUND, POOLED WATER IN THAT AREA. THIS A/C IS POST AD CF-2011-46 (84-24-52).