Airspace | Altitudes | Pilot Responsibility | Comments |
Class A | 18,000 feet to 60,000 feet | File an __36__ and receive an air traffic control clearance | |
Class B | Surface to 10,000 feet | Receive control clearance before entering | Around the busiest airports Consists of a surface area and __37__ |
Class C | Surface to 4,000 feet above airport elevation | Set up and retain __38__ with ATC prior to entering | Only found at airports with an operational control tower |
Class D | Surface to 2,500 feet above airport elevation | Pilots __39__ find and avoid aircraft by themselves | |
Class E | Airspace besides Classes A, B, C, or D | Used by aircraft __40__ to and from the terminal | |
【答案与解析】