Takeoff Distance Definition
The distance in feet from brake release to main gear lift off. Takeoff to clear a 50 foot obstacle, this is a function of ambient temperature, pressure altitude, gross weight, wind velocity, and runway slope.
Takeoff Distance Conditions
Favorable conditions should decrease takeoff distance.
Increase PA / Temp
Increase PA / Temp = Increase TD. This increase results in decreased engine performance, requiring a longer distance to achieve the same CAS for takeoff