| Concept | Definition | |
|---|---|---|
| FlightId / Flight Reference / Flight Leg Reference | What is referenced, why and how? | |
| Flight Leg | Flight Leg at the core (→ Since it's ATC and Airline world view anyway already from which Airports obtain the data?) | |
| Rotation | Linked FlightLegs (arrival and departure) | |
| Turnaround | Specialization of a rotation Same Aircraft, same day, same stand (according to Eurocontrol) | |
| Arrival / Departure | View on flight leg |