TM 55-1510-220-10 b. Storm windows Check closed. c. Bleed air valve switches Check OPEN. d. Cabin   altitude   Set   500   feet   lower   than airfield elevation. e. Cabin pressure/dump switch TEST (hold). f. Cabin rate-of-climb gage Check for descending indication and, when confirmed, release   cabin   pressure/dump   switch   from TEST. g. Aircraft    altitude    Set    to    planned    cruise altitude  plus  500  feet.    (If  this  setting  does not  result  in  a  CABIN  ALT  indication  of  at least  500  feet  over  takeoff  field  pressure altitude, adjust as required.) 12. Condition levers As required. 13. Windshield anti-ice As required. NOTE If    windshield    anti-ice    is    needed prior  to  takeoff,  use  normal  setting for  a  minimum  of  15  minutes  prior to   selecting   high   temperature   to provide   adequate   preheating   and minimize effects of thermal shock. 8-38.  *BEFORE TAKEOFF. (1).  Auto feather switch ARM. (2).  Bleed air valves As required. (3).  Ice & rain switches As required. (4).  Fuel    panel    Check    fuel    quantity    and    switch positions. (5).  Flight  and  engine  instruments  Check  for  normal indications. (6).  Cabin altitude and rate-of-climb controller Set. (7).  Annunciator panels Check (note indications). 8. Propeller levers HIGH RPM. 9. Flaps As required. 10. Trim Set. 11. Avionics Set. (12).    Flight controls Check. (13).    Departure briefing Complete. 8-39.  *LINE UP. (1).  Transponder As required. (2).  Engine autoignition switch ARM. 3. Power stabilized Check approximately 25% minimum. (4)   Condition levers LOW IDLE. 5. Lights As required. 6. Mission control panel Set. 8-40.  TAKEOFF. To    aid    in    planning    the    takeoff    and    to    obtain maximum   aircraft   performance,   make   full   use   of   the information  affecting  takeoff  shown  in  Chapter  7.    The data shown is achieved by setting brakes, setting takeoff power, and then releasing brakes.  When runway lengths permit, the normal takeoff may be modified by starting the takeoff  after  power  has  been  stabilized  at  approximately 25% torque, then applying power smoothly so as to attain full  power  no  later  than  65  KIAS.    This  will  result  in  a smoother   takeoff   but   will   significantly   increase   takeoff distance. a. Normal Takeoff.  After LINE UP procedures have been   completed,   release   brakes   and   smoothly   apply power to within 5% of target.  Power should be applied at a   rate   that   will   produce   takeoff   power   by   40   KIAS. Maintain    directional    control    with    nosewheel    steering, rudder,  and  differential  power,  while  maintaining  wings level with ailerons.  The pilot should retain a light hold on the  power  levers  throughout  the  takeoff  and  be  ready  to initiate ABORT procedures if required.  The copilot should insure    that    the    AUTOFEATHER    advisory    lights    are illuminated  (if  applicable),  adjust  and  maintain  power  at the  exact  takeoff  power  settings,  and  monitor  all  engine instruments.    The  pilot  will  rotate  at  the  recommended rotation  speed  (Vr)  and  establish  the  climb  attitude  (9to 16) that will attain best rate-of-climb airspeed (Vy) during the  initial  climb.    Rotation  should  be  at  a  rate  that  will allow liftoff at liftoff airspeed (V1of). b. Crosswind  Takeoff.    Position  the  aileron  control into the wind at the start of the takeoff roll to maintain a wings  level  attitude.    Under  strong  crosswind  conditions, leading with upwind power at the beginning of the takeoff roll  will  assist  in  maintaining  directional  control.    As  the nosewheel  comes  off  the  ground,  the  rudder  is  used  as necessary   to   prevent   turning   (crabbing)   into   the   wind. Rotate in a positive manner to keep from side-skipping as weight is lifted from the shock Change 6  8-18