TM 1-1510-218-10 7A-6 Reducing takeoff weight and using flaps 40%. Delaying    the    departure    for    more    favorable weather conditions. (10)   V1 (Takeoff Decision Speed) / V_r (Rotation Speed).  In the C-12 aircraft V1 and V_r are always the same speed.  Use the tabular data table at the top of Figure  7A-21, Take-Off Distance,  Flaps  UP  or  Figure 7A-25, Take-Off Distance, Flaps APPROACH. The   takeoff   configuration   for   this   example   is Flaps UP.  The V1/V_r speed is 112 KIAS. Enter  the  speed,  112  KIAS,  in  the  appropriate block on the TOLD card. (11)   V2 / V_yse.  Use the tabular data table at the top of Figure 7A-31, Climb – One Engine Inoperative. In  accordance  with  the  ATM,  flaps  are  retracted  just after liftoff 105 KIAS for both a normal takeoff and in the event of an engine failure after V₁.  The V2 / V_yse - KNOTS,  Figure  7A-31,  is  V_yse  and  is  essentially  the same  speed  as  V₂  for  a  takeoff  with  flaps  at  0%. Consequently, V₂ flaps 0% and V_yse are used as the V₂ speed  for  entry  on  the  TOLD  card.    V2  /  V_yse  for  a 12,600 pound aircraft is 122 KIAS. Enter the speed in the appropriate  block on the TOLD card. (11A) If    conducting    an    obstacle    clearance climb,    use    the    “V_x”    speed    from    the    TAKEOFF DISTANCE – FLAPS APPROACH chart. (12)   Climb   Gradient   Altitude.      This   is   the altitude to which the single engine climb gradient must be  continued  as  specified  in  the  applicable  DP.    The information is advisory and intended as a reminder to the crew of the altitude to which they must climb at V2 / V_yse in order to clear obstacles. For  this  example,  the  DP  specified  climbing  to 5000 feet MSL. Enter  the  altitude,  5000  feet,  in  the  appropriate block on the TOLD card. NOTE Items 13 through 17 are initially calculated at  takeoff  weight  as  a  contingency  for  a necessary return to the takeoff airport right after  departure.    The  items  must  be  re- calculated for the arrival at the destination. (13)   Runway  Length  Available.    This  is  the runway length available for landing. For this example, the runway length is 6000 feet and    there    is    no    displaced    threshold    or    other information  limiting  the  useful  landing  distance  of  the runway. Enter  the  length,  6000  feet,  in  the  appropriate block on the TOLD card. (14)   Landing  Weight.    For  the  takeoff  TOLD card, landing  and takeoff weights are  the  same.    For arrival  at  the  destination  the  TOLD  card  must  be  re- calculated  to  reflect  actual  aircraft  weight  and  airport conditions. For  this  example,  takeoff  and  landing  weight  is 12,600 pounds. Enter    the    weight,    12,600    pounds,    in    the appropriate block on the TOLD card. (15)   V_ref Speed.  This speed is 1.3 times V_so at the   intended   landing   weight   if   the   landing   will   be accomplished  using  Flaps  DN.    If  the  landing  will  be accomplished  with  the  Flaps  at  APPROACH,  or  any setting greater than APPROACH but less than DOWN, then  V_ref  is  1.3  times  V_s1  (the  stall  speed  for  FLAPS APPROACH).      Use   Figure   7A-13,   Stall   Speeds   – Power Idle to determine applicable stall speeds. For  this  example,  the  landing  weight  (assuming an   emergency   return   to   the   departure   airport)   is 12,600  pounds.    A  landing  with  the  Flaps  DOWN  is planned.      The   V_so   for   a   12,600   pound   aircraft   is 75 KIAS.  Therefore, V_ref is 1.3 times 75 = 97.5 and is rounded up to 98 KIAS. There is another method to determine V_ref when the   landing   will   be   accomplished   with   the   Flaps DOWN.      Subtract   5   KIAS   from   the   APPROACH SPEED ~ KNOTS obtained from the tabular data table at the top of Figure 7A-107, Landing Distance Without Propeller   Reversing,   Flaps   DOWN.      For   a   12,600 pound  aircraft  the  given  APPROACH  SPEED  is  103 KIAS – 5 KIAS = 98 KIAS. NOTE If  the  aircraft  will  be  landed  with  FLAPS less    than    full    DOWN,    the    LANDING DISTANCE  –  FLAPS  UP  must  be  used  to obtain  the  landing  distance  for  the  TOLD card.  Refer to Figure 7A-108 or 7A-110. As another example, if the landing was planned using  the  Flaps  at  APPROACH,  or  any  intermediate setting short of  DOWN, then the  V_ref speed  would  be 1.3  times  V_s1  (the  FLAPS  APPROACH  stall  speed). FLAPS  APPROACH  stall  speed  for  a  12,600  pound