Open Loop Instruction
|Term||Open Loop Instruction|
an ATC instruction that does not include a specified or implied point where the restriction on the trajectory ends and does not include a specified or implied return path to a downstream computed, known or expected trajectory.
SESAR Concept of Operations Step 1 Edition 2013 (Ed. 01.02.00)
Open-loop instructions are still used by the Controller in time critical situations, for instance: to ensure immediate separation of the aircraft versus conflicting traffic; to avoid adverse weather (for example Cumulonimbus clouds); or to make fine adjustments in the approach phase to maximise the runway throughput.
Lexicon Release 2015.1