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FORMATION  LIGHTS  VISUAL  CHECK
FORM  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 9-5.3  FORMATION  LIGHTS  OPERATIONAL  CHECK 9-5.3 INITIAL  SETUP Applicable   Configurations: W i t h o u t  Tools: None Materials: None Personnel   Required: Aircraft   Electrician   (2) References: TM   55-1520-240-23 Equipment    Condition: TM   55-1520-240-23: Battery   Connected Electrical Power On Hydraulic  Power  Off Visual  Check  of  Formation  Lights  Performed  (Task 9-5.2) TASK RESULT 1. 2. 3. 4. Check  that  LIGHTING   FORM   circuit   break- If  FORM  circuit  breaker  (1)  is  open,  close  it.  If  it er (1)  is  closed. opens  again,  go  to  task  9-5.4. Set   FORMATION   LTS   switch   (2)   to   DIM. Five  formation  lights  shall  come  on  dim.  If  any  light is  not  on,  go  to  task  9-5.5. Rotate   FORMATION   LTS   switch   (2) Five  formation  lights  shall  get  brighter  as  switch  is through   intermediate   positions   to   BRT. turned  to  right.  If  lights  go  out  or  brightness  does not  increase,  go  to  task  9-5.6. Set FORMATION LTS switch (2) to OFF. Five  formation  lights  shall  go  out. FOLLOW-ON    MAINTENANCE: TM    55-1520-240-23: Electrical  Power  Off Battery  Disconnected 9-142/(9-143 blank) Change  2







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