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CARGO HOOK LIGHTS VISUAL CHECK
CARGO HOOK LIGHTS 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 9-23.3.  CARGO HOOK LIGHTS OPERATIONAL CHECK 9-23-3 INITIAL SETUP Applicable Configurations: References: TM 55-1520-240-23 With17  Aft C/W MWP 1-1520-240-50-52 TM 55-1520-240-10 Tools: Electrical Repairer’s Tool Kit, Equipment Condition: NSN 5180-00-323-4915 TM 55-1520-240-23: Multimeter Battery Connected Electrical Power On Materials: Hydraulic Power Off None Personnel Required Aircraft Electrician TASK 1.  Check that cargo hook light circuit breaker is closed 2.  Check  switch  marked  “FWD”  on  cargo  hook light switch box is pushed up to “ON”  position. Indicator   lamp   above   switch   is   lit.      Forward cargo hook light is lit. 3. Check switch marked “CTR” on cargo hook light switch   box   is   pushed   up   to   ”ON”   position. Indicator lamp above switch is lit. 4.  Check switch marked “AFT” on cargo hook light switch   box   is   pushed   up   to   “ON”   position. Indicator  lamp  above  switch  is  lit.    Aft  cargo hook light is it. RESULTS If cargo light circuit breaker is open, close it.  If it opens again, go to Task 9-23-4. If indicator lamp does light.  Replace  é327.  If not lit after replacing lamp go to Task 9-23.6 If  indicator  lamp  does  not  light  replace  é327.    If  not  lit, after replacing lamp, go to Task 9-23.5. If  center  cargo  hook  light  does  not  light,  replace  é327 lamp.  If not lit, go to Task 9-23.6. If aft cargo hook light does not light, replace é327 lamp. If not lit after replacing lamp, go to Task 9-23.5. END OF TASK Change 14  9-379







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