OVERHEAD PANEL LIGHTS OPERATIONAL CHECK

OVERHEAD PANEL LIGHTS VISUAL CHECK - TM-55-1520-240-T-2_774

OVHD PNL CIRCUIT BREAKER DOES NOT STAY CLOSED - TM-55-1520-240-T-2_776

TM-55-1520-240-T-2 CH-47D Heilcopter Manual
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TM 55-1520-240-T 9-11.8 OVERHEAD PANEL LIGHTS OPERATIONAL CHECK 9-11.8 INITIAL SETUP References: Applicable Configurations: TM 55-1520-240-23. With 17 Equipment Condition: Tools: TM 55-1520-240-23: None Battery Connected Materials: Electrical Power On None Hydraulic Power Off Overhead Panel Lights Visual Check Performed Personnel Required: (Task 9-11.7) Aircraft Electrician TASK RESULT 1. Check that LIGHTING OVHD PNL circuit breaker (1) is If OVHD PNL circuit breaker (1) is open, close it. If it closed. opens again, go to task 9-11.9. 2. Turn OVHD CSL lights control (2) from OFF through All control panels in overhead panel shall light dim and DIM to BRT. increase in brightness as control (2) is turned to BRT. If any panel is not lit, go to task 9-11.10. If panel brightness does not increase as control is turned, replace OVHD CSL lights control. 3. Turn OVHD CSL lights control (2) to OFF. All control panel lights in overhead panel shall go out. If not, replace OVHD CSL lights control. Follow-on Maintenance: TM 55-1520-240-23: Battery Disconnected Electrical Power Off END OF TASK 9-212.2 Change 19

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