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Old 28th Jan 2018, 16:28
  #12 (permalink)  
galaxy flyer
 
Join Date: Dec 2002
Location: Where the Quaboag River flows, USA
Age: 71
Posts: 3,414
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FAR 25.111 says,

a) Takeoff distance on a dry runway is the greater of --

(1) The horizontal distance along the takeoff path from the start of the takeoff to the point at which the airplane is 35 feet above the takeoff surface, determined under §25.111 for a dry runway; or

(2) 115 percent of the horizontal distance along the takeoff path, with all engines operating, from the start of the takeoff to the point at which the airplane is 35 feet above the takeoff surface, as determined by a procedure consistent with §25.111.

So, that take-off at the WAT limit should have been at 35’ above the end of the TODA. Now, if there was a clearway, it might have looked exactly like this IF the planned V1 allowed an abort at the end of the TORA. Saying TORA/TODA is 115% of the take-run distance is the same as saying TORR/TODR is 87% of the TORA/TODA.
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