Final answer:
Controlled airspace in high-level airspace includes Class A, B, C, D, and E, and is regulated to ensure aircraft separation and safety. Class A airspace requires pilots to follow Instrument Flight Rules and covers airspace from 18,000 feet MSL to flight level 600. Other classes of airspace have specific altitude ranges and operational requirements.
Step-by-step explanation:
The types of controlled airspace in high-level airspace are specifically designed to ensure safety and efficiency in the skies. High-level airspace is typically defined as airspace at and above 18,000 feet MSL (Mean Sea Level) up to and including flight level 600. Within this airspace, there are various types of controlled areas, including Class A, B, C, D, and E airspace, each with their own set of rules and regulations for aircraft operation.
Class A airspace extends from 18,000 feet MSL up to and including flight level 600 over the continental United States and Alaska, and it requires all pilots to operate under Instrument Flight Rules (IFR).
Other classes of airspace (B, C, D, and E) have specific altitude ranges, operational requirements, and clearance rules. Class B airspace is around the busiest airports, Class C around airports that have a certain level of air traffic, and Class D around smaller airports with an operating control tower. Class E is everywhere else that is controlled, and it starts either at the surface or at a designated altitude up to 18,000 feet MSL.
The air traffic control measures, such as maintaining specified minimum distances between aircraft, are part of managing these airspace types to ensure safe separation and to organize the flow of air traffic.