An aircraft should be able to move safely and efficiently in its airspace in all operating phases: during takeoff, flying and landing. This task is the focus of air traffic management (ATM).
A light aircraft and a helicopter almost have a mid-air collision. A hobby pilot enters restricted airspace. A pilot misunderstands an air traffic controller and makes a mistake. Air traffic management (ATM) covers safety issues relating to air traffic control services and aircraft conflicts in flight in the various airspace classes.
