Open Loop Clearance
From EUROCONTROL ATM Lexicon
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| Term | Open Loop Clearance |
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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).
