enroute turning area

enroute turning area

[en′rüt ′tərn·iŋ ‚er·ē·ə]
(navigation)
An area of specified dimensions used by an aircraft when a change of course is necessary; the area extends beyond the primary and secondary obstruction clearance areas and is provided with adequate protection; turning area criteria supplement the basic airways and route segment criteria to protect the aircraft. Also known as turning area.
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