CTOT
Calculated take-off time (aka slot)
-5 +10 minute tolerance
Provided by the Central Flow Management Unit (CFMU), taking into account the European Civil Aviation Conference (ECAC) ATC flow
(aka ATFM - Air Traffic Flow Management)
TOBT
Target Off Block Time
The time that an aircraft operator / handling agent estimates that an aircraft will be completely ready.
Pilots will call at TOBT (+/-) 5 minutes to
confirm ready.
TOBT’s require updating by us if they differ by
5mins from previous TOBT
ESAT
Estimated Start-Up Approval Time
The time provided by ATC that an aircraft can
expect to receive start up approval.
NADP 1
NADP 2