Definition
An automation tool used by air traffic control that combines departure and arrival management at busy airports into a single coordinated system. IDAC helps controllers sequence aircraft, assign departure times, and manage arrival flows so that traffic moves efficiently in and out of the same terminal area without conflict.
Plain English
A computer system that helps air traffic controllers handle takeoffs and landings together at the same airport, so departures and arrivals don't get in each other's way.
Context Anchor
Pilots may see this term in FAA traffic-management material. They usually do not operate IDAC directly, but they may feel its effect when ATC holds a flight for a release time or fits a flight into busy traffic.
Derivation
The name describes its function plainly: it 'integrates' (combines into one) the handling of 'departures' (aircraft leaving) and 'arrivals' (aircraft coming in) into a single 'capability' (working tool). Knowing this tells the pilot it isn't a clearance, a frequency, or a procedure — it's a back-end ATC tool that shapes the timing they receive.
Why Pilots Care
It reduces ground and airborne delays, improves schedule reliability, and lowers fuel burn at equipped airports.
Intuition Check
IDAC is not equipment installed in the aircraft. It is an ATC automation capability used behind the scenes to coordinate traffic timing.
Example Sentence 1
At several major hubs, controllers use IDAC to coordinate departure release times with the inbound arrival stream.
Example Sentence 2
With IDAC active, the airport maintained higher departure rates during peak arrival periods.