text: The takeoff distance of an airplane is affected 
  by many different factors other than technique 
  takeoff distance 
  and, prior 
  takeoff, 
  the 
  must be determined and compared with 
  runway length available. The principal factors 
  affecting the takeoff distance are as follows: 
  
  to 
  
  (1) The gross weight of the airplane has 
  a considerable effect on takeoff distance be- 
  cause it affects both takeoff speed and ac- 
  celeration during takeoff roll. 
  
  (2) The surface winrls must be considered 
  because of the powerful effect of a headwind 
  or tailwind on the takeoff distance. 
  In the 
  case of the crosswind, the component of 
  wind along the runway will be the effective 
  headwind or tailwind velocity. 
  In addi- 
  tion, the component of wind across the run- 
  way will define certain requirements of lateral 
  control power and the 
  compo- 
  limiting 
  nent wind must not be exceeded. 
  
  As in the case of landing, the specific tech- 
  niques necessary may vary greatly between 
  various types of airplanes and various oper- 
  ations but certain fundamental principles will 
  be common to all airplanes and all operations. 
  The specific procedures recommended for each 
  to 
  airplane type must be followed exactly 