A clearway is defined as a rectangular area over land or water under the control of the aerodrome operator, selected as a suitable area over which an aircraft may make a portion of its initial climb to a specified height. A clearway increases the allowable airplane operating takeoff weight without increasing runway length. The length of the clearway is included in the length of the takeoff distance available. For example, if the takeoff run available is 3,000 ft long and there is a 750 ft long clearway beyond the end of the runway, the takeoff distance available is 3,750 ft.

Definitions

Takeoff Distance Available (TODA): The length of the Takeoff Tun Available (TORA) plus the length of the clearway, where provided.
Takeoff Run Available (TORA): The length of runway declared available and suitable for the ground run of an aeroplane taking off.

References

AIM AGA 3.9 Clearway
AIM AGA 3.10 Declared Distances

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