What is an IFR aircraft expected to do with an ATC clearance?

An IFR (Instrument Flight Rules) aircraft is required to comply with the clearance provided by Air Traffic Control (ATC), which includes adhering to specified routes and altitudes. This compliance is fundamental for maintaining safety and efficiency in air traffic management.

When ATC issues a clearance, it outlines the specific trajectory that pilots must follow to ensure safe separation from other aircraft, along with the assigned altitudes and any additional instructions necessary for their flight. The pilots must interpret these clearances and execute them unless they receive instructions to alter their course or if safety dictates otherwise.

Following the clearance helps in managing the flow of air traffic, especially in busy airspaces. While pilots are expected to communicate any issues or necessary changes regarding the clearance, the primary responsibility is to comply with the initial instructions provided by ATC. This compliance is vital for the orderly and safe operation of air transportation.