COPILOTS FLIGHT INSTRUMENT PANEL LIGHTS OPERATIONAL CHECK

COPILOTS FLIGHT INSTRUMENT PANEL LIGHTS VISUAL CHECK - TM-55-1520-240-T-2_753

COPLT INST CIRCUIT BREAKER DOES NOT STAY CLOSED

TM-55-1520-240-T-2 CH-47D Heilcopter Manual
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TM 55-1520-240-T 9-10.8 COPILOT’S FLIGHT INSTRUMENT PANEL LIGHTS OPERATIONAL CHECK 9-10.8 INITIAL SETUP References: Applicable Configurations: TM 55-1520-240-23 With 17 and 69 Equipment Condition: Tools: TM 55-1520-240-23: None Battery Connected Materials: Electrical Power On None Hydraulic Power Off Personnel Required: Copilot Flight Instrument Panel Lights Visual Check Aircraft Electrician Performed (Task 9-10.2) TASK RESULT 1. Check that LIGHTING COPLT INST circuit breaker (1) If COPLT INST circuit breaker (1) is open, close it. If it is closed. opens again, go to task 9-10.9. 2. Turn CPLT INST light control (2) from OFF through Following lights shall come on and increase in brightness DIM to BRT. as control (2) is rotated to BRT: a. Panel lights (3). b. Internal lights in indicators (4). c. Panel lights and switch captions VOR, DOP, FM, and CMD on HSI MODE SELECT panel (5). If any light is not lit, go to task 9-10.10. If light brightness does not increase, replace CPLT INST lights control. 3. Turn CPLT INST lights control (2) to OFF. All copilot's flight instrument panel lights shall go out. If not, replace CPLT INST light control (2). FOLLOW-ON MAINTENANCE: TM 55-1520-240-23: Battery Disconnected Electrical Power Off END OF TASK 9-198.2 Change 19

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