TM 55-1510-220-10 3.  Handle access door (upper aft corner of door) Unfasten and open. 4.    Handle  Press  button  and  pull  handle down until it latches in closed position. 5.  Handle access door Secure. 6.      Handle   access   door   (lower   forward corner of door) Unfasten and open. 7.  Handle Move to full forward position. 8.    Safety  hook  Check  locked  in  position by pulling aft on handle. 9.  Handle access door Secure. c. Cabin  Emergency  Hatch.    The  cabin  emergency hatch, placarded EXIT PULL, is located on the right cabin sidewall  just  aft  of  the  copilot's  seat.    The  hatch  may  be released, from the inside with a pull-down handle.  A flush mounted  pull  out  handle  allows  the  hatch  to  be  released from  the  outside.    The  hatch  is  of  the  non-hinged  plug type, which removes completely from the frame when the latches are released.  The hatch can be key locked from the   inside,   to   prevent   opening   from   the   outside.      The inside  handle  will  unlatch  the  hatch  whether  or  not  it  is locked,    by    overriding    the    locking    mechanism.        The keylock should be unlocked prior to flight to allow removal of    the    hatch    from    the    outside    in    the    event    of    an emergency.  The key remains in the lock when the hatch is  locked  and  can  be  removed  only  when  the  hatch  is unlocked.  The key slot is in the vertical position when the hatch  is  unlocked.    Removal  of  the  key  from  the  lock before   flight   assures   the   pilot   that   the   hatch   can   be removed from the outside if necessary. d. Cabin Door Caution Light.  As a safety precaution, two  illuminated  MASTER  CAUTION  lights,  on  the  glare shield  and  a  steadily  illuminated  CABIN  DOOR  yellow caution  annunciator  light  on  the  caution/advisory  panel indicate  the  cabin  door  is  not  closed  and  locked.    This circuit is protected by 5-ampere circuit breakers placarded ANN PWR and ANN IND, located on the overhead circuit breaker panel (fig.  2-27). 2-10.  WINDOWS. a.    Cockpit Window.  The pilot and copilot have side windows, a windshield and storm windows, which provide visibility  from  the  cockpit.    The  storm  windows  may  be opened on the ground or during unpressurized flight. b.  Cabin Window.    The  outer  cabin  windows  are  of two-ply    construction,    are    the    pressure    type    and    are integral  parts  of  the  pressure  vessel.    All  cabin  windows are  painted  over  except  for  the  three  windows  located farthest  aft  on  the  right  side,  and  the  two  farthest  aft  on the  left  side.    The  unpainted  windows  are  provided  with flaps which may be raised or lowered when it is desired to seal out light. 2-11.  SEATS. a. Pilot  and  Copilot  Seats.      The   pilot   and   copilot seats (fig.  2-10) are separated from the cabin by movable curtains.  The controls for vertical height adjustment and fore  and  aft  travel  are  located  under  each  seat.    The forward and aft adjustment handle is located beneath the bottom  front  inboard  corner  of  each  seat.    Pulling  up  on the handle allows the seat to move fore or aft.  The height adjustment  handle  is  located  beneath  the  bottom  front outboard  corner  of  each  seat.  Pulling  up  on  the  handle, allows  the  seat  to  move  up  and  down.    Both  seats  have adjustable  headrests  and  armrests  which  will  raise  and lower for access to the cockpit.  Handholds on either side of    the    overhead    panels    and    a    fold-away    protective pedestal step are provided for pilot and copilot entry into the  cockpit.    For  the  storage  of  maps  and  the  operator's manual,  pilot  and  copilot  seats  have  an  inboard-slanted, expandable pocket affixed to the lower portion of the seat back.    Pocket  openings  are  held  closed  by  shock  cord tension. b. Pilot     and     Copilot     Seat     Belts     and     Shoulder Harnesses.  Each pilot and copilot seat is equipped with a lap-type  seat  belt  and  shoulder  harness  connected  to  an inertia   reel.      The   shoulder   harness   belt   is   of   the   "Y" configuration  with  the  single  strap  being  contained  in  an inertia reel attached to the base of the seatback.  The two straps  are  worn  with  one  strap  over  each  shoulder  and fastened  by  metal  loops  into  the  seat  belt  buckle.    The spring  loading  at  the  inertia  reel  keeps  the  harness  snug but   will   allow   normal   movement   required   during   flight operations.    The  inertia  reel  is  designed  with  a  locking device that will secure the harness in the event of sudden forward 2-18