COPLT WSHLD CONT CIRCUIT BREAKER WILL NOT STAY CLOSED

WINDSHIELD ANTI-ICING SYSTEM OPERATIONAL CHECK (Continued)

COPLT WSHLD HEAT CIRCUIT BREAKER WILL NOT STAY CLOSED

TM-55-1520-240-T-3 CH-47D Heilcopter Manual
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TM 55-1520-240-T 12-1.4 COPLT WSHLD CONT CIRCUIT BREAKER WILL NOT STAY CLOSED 12-1.4 FAULT lSOLATlON PROCEDURE INITIAL SETUP Applicable Configurations: All Took Electrical Repairer’s Tool Kit, NSN 5180-00-323-4915 Multi meter Matarials: None Personnel Required: 68F20 Aircraft Electrician References: TM 55-1520-240-23 Equipment Condition: TM 55-1520-240-23: Battery Disconnected Electrical Power Off Hydraulic Power Off DID CB OPEN BEFORE CPLT WINDSHIELD ANTI-ICE SW SET TO ON? YES LOCATE GROUND FAULT ON WIRE W550-23-22, W645-62- 22, W559-110-22 BETWEEN COPLT WSHLD CONT CB AND CPLT WINDSHIELD ANTI-ICE SW. REPAIR OR RE- PLACE WIRE AS REQUIRED. OPEN NOSE ACCESS PNL. REMOVE DYNAMIC ABSORBER. DISCONNECT PLUG 083P1 FROM COPILOT WINDSHIELD ANTI-ICING CONTROL BOX. CHECK FOR GROUND ON PLUG 083P1 PIN A IS GROUND PRESENT, YES LOCATE GROUND FAuLT ON WIRE W558-17-20,W639-141 - 20. OR W559-205-22 BETWEEN PLUG 083P1 AND CPLT WINDSHIELD ANTI-ICE SW. REPAIR OR REPLACE WIRE AS REQUIRED. REPLACE COPILOT’S WIND- SHIELD ANTI-ICING CONTROL BOX. 12-6 END OF TASK

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