IFR Enroute Operations

The National Airspace System (NAS) is the network of United States airspace: air navigation facilities, equipment, services, airports or landing areas, aeronautical charts, information/services, rules, regulations, procedures, technical information, manpower, and material.

This chapter is a general discussion of:

• Airspace classification
• Instrument charts.
• Enroute and terminal procedures.

Including operations within the NAS. Detailed information on the classification of airspace, operating procedures, and restrictions is found in the Aeronautical Information Manual (AIM).

• Understand the duties of the controller and pilot during communication in the IFR world.  You will also learn to the format of an IFR clearance, which is required for every IFR flight, and finally how to most efficiently set up your communications for flight.
• Learn about the different types of airspace and their regulations and requirements.
• Understand how enroute IFR procedures differ from VFR procedures, and how to operate in these environments.