Question

Controlled low-level airspace extends upward from ____ ft

AGL up to, but not including, 18 000 ft ASL

Answer 1

Controlled low-level airspace typically begins at either 700 or 1,200 ft AGL and extends up to, but not including, 18,000 ft ASL, regulated by the FAA for aircraft safety.

Step-by-step explanation:

The question is inquiring about the specific altitude range that defines controlled low-level airspace. Controlled low-level airspace extends upward from 700 or 1,200 ft AGL (Above Ground Level), depending on the region, up to, but not including, 18,000 ft ASL (Above Sea Level). In the United States, the Federal Aviation Administration (FAA) regulates this airspace to ensure aircraft safety by requiring separation of at least five miles laterally or 2,000 feet vertically between airplanes flying at similar altitudes (1,000 feet if they are below 29,000 feet).