text: brakes does not produce the maximum coefi- 
  cient of friction. 
  The incipient skid condi- 
  tion will produce the maximum coefficient of 
  friction but this peak is difficult 
  to recognize 
  and maintain without an antiskid system. 
  Judicious use of the brakes is necessary to 
  obtain the peak coefficient of friction but not 
  develop a skid or locked wheel which could 
  cause tire failure, loss of control, or consider- 
  able reduction in the friction coefficient. 
  
  The capacity of the brakes must be sufficient 
  to create adequate braking torque and produce 
  the high coefficient of friction. 
  In addition, 
  the brakes must be capable of withstanding 
  the heat generated without 
  fading or losing 
  effectiveness. The most critical requirements 
  of the brakes occur during 
  the 
  maximum allowable landing weight. 
  
  landing at 