text: The operation of any aircraft is subject to 
  specific operating strength 
  A 
  single large overstress may cause structural 
  failure or damage severe enough to require 
  costly overhaul. 
  Less severe overstress re- 
  peated for sufficient time will cause fatigue 
  cracking and require replacement of parts to 
  prevent subsequent failure. A combat airplane 
  need not be operated in a manner like the “little 
  old lady from Pasadena” driving to church on 
  Sunday but each aircraft 
  type has strength 
  capability only specific to the mission require- 
  ment. Operating limitations must be given 
  due regard. 
  
  limitations. 