Separation Standards

ATC rule #1: Don’t hit nuthin’. But to achieve that, there are rules and standards. Here’s a quick rundown on those so you can better understand what the controller needs.

maclawler

Wednesday, April 02, 2025 at 05:00 AM ET

Verified

Edited By: Omar Filipovic

Simulated screen showing different flights for transport and passengers with the world as a background

Key Takeaways:

Air Traffic Control's (ATC) paramount mission is to ensure aircraft safety by maintaining strict separation from other aircraft, terrain, and obstacles 24/7, guided by the comprehensive rules outlined in FAA Order 7110.65.
Controllers utilize a network of ground-based radar systems (primary, secondary, ADS-B, WAM) to achieve specific separation standards, which are typically 3 miles lateral for terminal control and 5 miles for en-route control, alongside 1000 feet vertical separation.
Aircraft are identified through various radar methods, most commonly discrete beacon codes, which then populate a data tag on controller screens displaying essential flight details like callsign and altitude for continuous monitoring and control.

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Keeping you safe is a big deal for us—the biggest. Air Traffic Control exists to separate aircraft from each other, from terrain, and from obstacles. We work from dawn to dawn, 24/7, 365 days a year, watching the skies and making decisions that protect you in our National Airspace System (NAS).

We have tools and rules to accomplish this? That control is based on many factors, including radar procedures, non-radar procedures, rules and regulations, plus a strong infrastructure that supports each of these techniques.