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approach surface
Definição1
An inclined plane or combination of planes preceding the threshold.
Fonte1
INTERNATIONAL CIVIL AVIATION ORGANIZATION. Annex 14 to the Convention on International Civil Aviation: aerodromes: volume 1: aerodrome design and operation. 8th ed. Montreal, 2018. (Annex 14).
Contexto
A fixed obstacle that extends above an approach surface within 3 000 m of the inner edge or above a transitional surface shall be marked and, if the runway is used at night, lighted.
The threshold is normally located at the extremity of a runway, if there are no obstacles penetrating above the approach surface.
Subárea1
Piloting
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approach slope
Português
superfície de aproximação