Performancetake-off performance
Take-off Distance Required (TODR)
Take-off Distance Required (TODR) is the horizontal distance required from the commencement of the take-off roll to the point at which the aircraft reaches a height of 50 ft above the runway surface (the screen height). For light aeroplanes not exceeding 5,700 kg Maximum Take-off Weight (MTOW), this is the standard AFM reference. Obstacle clearance along the departure path is a separate consideration.
Key Points
- •TODR must be equal to or less than the Take-off Distance Available (TODA).
- •TODR increases significantly with higher density altitude, increased aircraft weight, and tailwinds.
- •TODR is derived using the performance charts provided in the aircraft's flight manual.
Exam Relevance
Pilots must verify that the TODR does not exceed the Take-off Distance Available (TODA) under the prevailing ambient conditions to ensure a safe departure.
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