TM 1-1510-224-10 between  maximum  cruise  speed,  pressure  altitude,  ISA condition,    and    aircraft    weight    in    pounds.        During operation  with  ice  vanes  extended,  true  airspeed  will  be reduced approximately 15 knots. (2) Purpose.  This graph is used to determine maximum  cruise  speed,  given  pressure  altitude  in  feet and ISA condition, and aircraft weight in pounds.  During operation  with  ice  vanes  extended,  true  airspeed  will  be reduced by approximately 15 knots. ao. Maximum Cruise Power At 1700 RPM. (1) Description.    The  Maximum  Cruise  Power At 1700 RPM graph (fig. 7-49) depicts the recommended  torque  setting  to  attain  maximum  cruise power. (2) Purpose.  This graph is used to determine the   recommended   torque   setting   for   maximum   cruise power,  given  indicated  free  air  temperature  in  degrees Celsius,  pressure  altitude  in  feet,  and  aircraft  weight  in pounds.      During   operation   with   ice   vanes   extended, torque will decrease approximately 12%. ap. Fuel   Flow   at   Maximum   Cruise   Power   at   1700 RPM. (1) Description.    The  Fuel  Flow  at  Maximum Cruise Power at 1700 RPM graph (fig.  7-50) depicts the fuel  flow  per  engine  in  pounds  per  hour  at  maximum cruise power. (2) Purpose.  This graph is used to determine maximum    cruise    power    fuel    flow    per    engine    given indicated    free    air    temperature    in    degrees    Celsius, pressure  altitude  in  feet,  and  aircraft  weight  in  pounds. During  operation  with  ice  vanes  extended,  fuel  flow  will decrease 8%. aq. Range-Profile --Maximum Cruise Power at 1700 RPM. (1) Description.    The  Range  Profile  Maximum Cruise  Power  at  1700  RPM  graph  (fig.    7-51)  depicts range at maximum cruise power. (2) Purpose.  This graph is used to determine range  in  nautical  miles  for  various  fuel  loads  and  fuel tank   combinations,   given   pressure   altitude   in   feet   and true  airspeed  in  knots.    Range  allows  for  start,  taxi,  and runup;  includes  cruise  climb  descent;  and  allows  for  45 minutes   reserve   fuel   at   maximum   range   power.      At 16,620   pounds   ramp   weight,   the   maximum   zero   fuel weight limitation of 13,100 pounds would be exceeded at fuel loading less than 3520 pounds. ar. Normal Cruise Power at 1500 RPM. (1) Description.    The  Normal  Cruise  Power  at 1500   RPM   tables   (fig.      7-52   through   7-59)   show   fuel flow, airspeed, and torque for various flight conditions. (2) Purpose.        These    tables    are    used    to determine  fuel  flow  per  engine,  total  fuel  flow,  indicated airspeed,  and  true  airspeed,  given  pressure  altitude  in feet,  indicated  free  air  temperature  in  degrees  Celsius, free air temperature in degrees Celsius, aircraft weight in pounds,   and   torque   per   engine   in   percent.      During operation  with  ice  vanes  extended,  torque  will  decrease by    approximately    12%,    fuel    flow    will    decrease    by approximately  8%,  and  true  airspeed  will  be  reduced  by approximately 15 knots. as. Normal Cruise Speeds at 1500 RPM. (1) Description.    The  Normal  Cruise  Speeds at  1500  RPM  graph  (fig.    7-60)  depicts  the  relationship between normal cruise speed, pressure altitude, and ISA condition. (2) Purpose.  This graph is used to determine maximum  cruise  speed,  given  pressure  altitude  in  feet, ISA   condition,   and   aircraft   weight   in   pounds.      During operation  with  ice  vanes  extended,  true  airspeed  will  be reduced by approximately 15 knots at. Normal Cruise Power At 1500 RPM. (1) Description.    The  Normal  Cruise  Power  at 1500 RPM graph (fig.  7-61) depicts the torque setting to attain normal cruise power. (2) Purpose.  This graph is used to determine the    torque    setting    for    normal    cruise    power,    given indicated free air temperature in degrees Celsius or ISA, pressure altitude in feet, and aircraft weight in pounds. au. Fuel   Flow   at   Normal   Cruise   Power   at   1500 RPM. (1) Description.      The   Fuel   Flow   at   Normal Cruise Power at 1500 RPM graph (fig.  7-62) depicts the fuel flow per engine in pounds per hour at normal cruise power. (2) Purpose.  This graph is used to determine normal cruise power fuel flow per engine, given indicated free    air    temperature,    pressure    altitude    in    feet,    and aircraft   weight   in   pounds.      During   operations   with   ice vanes  extended,  torque  will  decrease  by  approximately 12%. av. Range   Profile   Normal   Cruise   Power   at   1500 RPM. (1) Description.      The   Range   Profile   Normal Cruise  Power  at  1500  RPM  graph  (fig.    7-63)  depicts range at normal cruise power. 7-7