At the concept level, from an airport's perspective, it does not matter if a flight leg is between - take-off and landing.
- off-block and in-block.
Airports will however most often model a flight leg as starting with ActualOffBlockTime and ending with ActualInBlockTime. From the AIDX implementation guide: Flight Legs
The principal data structure within AIDX refers to a flight leg, i.e. an aircraft movement
covering the departure at the originating airport and the arrival at the destination airport. A
flight with points of call en-route therefore consists of multiple flight legs, each with its own
set of data. The data associated with an aircraft turnaround at an airport will be contained
within two flight leg data structures, one associated with the arriving flight leg and one
associated with the departing flight leg. | 