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PILOTS FLIGHT INSTRUMENT PANEL LIGHTS VISUAL CHECK - TM-55-1520-240-T-2_705
PILOTS INSTR 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 9-8.3 PILOT’S FLIGHT INSTRUMENT PANEL LIGHTS OPERATIONAL CHECK 9-8.3 INITIAL SETUP References: Applicable Configurations: TM 55-1520-240-23 Without 17 Equipment Condition: Without 74 TM 55-1520-240-23: Tools: Battery Connected None Electrical Power On Materials: Hydraulic Power Off None Pilot's Flight Instrument Panel Lights, Visual Check Performed (Task 9-8.2) Personnel Required: Aircraft Electrician TASK RESULT 1. Check that LIGHTING PILOT INSTR circuit breaker (1) If PILOT INSTR circuit breaker (1) is open, close it.  If it is closed. opens again, go to task 9-8.4. 2. Turn PILOT FLT INST LTS control (2) from OFF Following lights shall come on and increase in brightness through 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). d.   Light in standby compass (6). If any light is not lit, go to task 9-8.5.  If lights do not increase in brightness, replace PILOT FLT INST LTS control (2). 3. Turn PILOT FLT INST LTS control (2) to OFF.   All pilot's instrument panel lights shall go out.  If they do not, replace PILOT FLT INST LTS control (2). FOLLOW-ON MAINTENANCE: TM 55-1520-240-23: Electrical power off. Battery disconnected. END OF TASK 9-170  Change 19







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