Accelerate stop distance available (ASDA) is the length of the…
Refer to figure.
ICAO Annex 14
Declared distances.
a) Take-off run available (TORA). The length of runway declared available and suitable for the ground run of an aeroplane taking off.
b) Take-off distance available (TODA). The length of the take-off run available plus the length of the clearway, if provided.
c) Accelerate-stop distance available (ASDA). The length of the take-off run available plus the length of the stopway, if provided.
d) Landing distance available (LDA). The length of runway which is declared available and suitable for the ground run of an aeroplane landing.
Clearway. A defined rectangular area on the ground or water under the control of the appropriate authority, selected or prepared as a suitable area over which an aeroplane may make a portion of its initial climb to a specified height.
Stopway. A defined rectangular area on the ground at the end of take-off run available prepared as a suitable area in which an aircraft can be stopped in the case of an abandoned take-off.
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