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Old 20th Mar 2021, 17:56
  #63 (permalink)  
Big Pistons Forever
Join Date: Jan 2004
Location: West Coast Canada
Posts: 4,024
A go no go check point should be used on every takeoff as low engine power, dragging brakes or other factors may retard the aircraft acceleration sufficiently to affect flight safety. I also teach the 2/3 at 1/3 as a general rule of thumb with the understanding that it may need to be modified for short fields

It is also important to note that the aircraft has to keep accelerating. I remember one takeoff on a muddy grass where I made the 2/3 speed in the first third of the runway but the aircraft absolutely refused to accelerate any further after that.
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