… moment of push-back to wheels-up, including surveillance data in flight, touchdown time, and gate assignment.” Common Flight Data Structures Flight data need to be shared throughout the NAS. … Weather, ATM, Performance, General NAS Data clearances current capacities current weather gate asignments schedules flight plans preferences a/c resources local weather traffic forecasts … Before Flight Phase 3: Active Flight Planning Phase 4: Post-Flight Analysis Time In fo rm at io n Fl ow • new flight plans • cancelled flight plans • updates to flight plan information: -- …