Which is the maximum altitude that Class E airspace typically starts at above ground level over an airport?

Class E airspace typically begins at 1,200 feet above ground level (AGL) over most airports. This type of airspace is designed to accommodate various types of flight operations, including those of general aviation, while still allowing for safe integration with other airspace classes.

The designation of 1,200 feet AGL as the starting point helps in establishing controlled airspace where air traffic can be managed to ensure safety, particularly for flights operating in and out of airports. This altitude serves as an effective transition zone from uncontrolled airspace to controlled airspace, where pilots may receive air traffic control services and broader communication with other aircraft.

Higher altitudes, such as 3,500 feet AGL or 5,000 feet AGL, do not describe the standard entry point for Class E airspace, as these are levels generally associated with higher altitudes of Class A airspace or Class E extensions, which apply under specific conditions. Notably, Class E airspace does not have a specified maximum altitude, but its lower limit is consistently recognized at 1,200 feet AGL, particularly around airports, which further solidifies the understanding of airspace structure for flying operations.