Open Loop Clearance

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Link Semantic Value
Term Open Loop Clearance
Status


Mandatory for


Contexts

SESAR

Categories
Synonyms


Related entries

Reference Business Trajectory

Closed Loop Clearance

Broader term


Narrower term


Abbreviation

Definition

an ATC clearance that does not include a specified or implied point where the restriction on the trajectory ends.

Definition Source

SESAR Consortium (2007) CONOPS Acronyms and Definitions, Task 2.2.2 - Milestone 3, Document Number: DLT-0612-222-02-00

Note

Most tactical clearances take this form; they include heading (including track offset), level, and speed restrictions and exceptionally could also cover rates of climb or descent. Open-loop clearances are cancelled (closed) by a further instruction from the controller that defines how the flight should revert to the Reference Business Trajectory (RBT).