Calculated Take Off Time (CTOT)
Calculated Take Off Time (CTOT)
Definition
Calculated Take Off Time (CTOT) - The time provided by the Central Flow Management Unit (CFMU), taking into account the European Civil Aviation Conference (ECAC) ATC flow situation, that an aircraft has been calculated to take off. The CTOT, also known as the ATFM ( Air Traffic Flow Management) slot, has a tolerance of – 5 to +10 minutes
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SKYbrary Aviation Safety. (June 23, 2022). Calculated Take Off Time (CTOT).
Retrieved February 3, 2026
from https://skybrary.aero/articles/calculated-take-time-ctot
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