text: speed may encounter a variety of stability, con- 
  tran- 
  trol, or buffet problems associated with 
  sonic flight. Since the equivalent airspeed for 
  a given Mach number decreases with altitude, 
  the magnitude of compressibility effects at 
  high altitude may be negligible for the tran- 
  sonic airplane. 
  In this sense, the airplane may 
  not be able to fly at high enough dynamic 
  pressures within a certain range of Mach num- 
  bers to create any significant stability or 
  control problem. 
  
  The transonic airplane which is buffet lim- 
  ited requires due consideration of the effect of 
  load factor on the onset of buffet,. Since 
  critical Mach number decreases with 
  lift coef- 
  ficient, the limit Mach number will decrease 
  If the airplane is subject to 
  with load factor. 
  prolonged or repeated buffet for which it was 
  not designed, structural fatigue will be the 
  certain result. 
  
  The limit airspeed for each type aircraft is 
  set sufficiently high that full 
  intended appli- 
  cation of the aircraft should be possible. Each 
  of the factors mentioned about the effect of 
  excess airspeed should provide due respect for 
  the limit airspeed. 
  
  LANDING AND GROUND LOADS 