What is considered a requirement for flying in controlled airspace?

Obtaining prior authorization is a fundamental requirement for flying in controlled airspace. Controlled airspace refers to specific areas of airspace where air traffic control (ATC) has the authority to provide air traffic services and ensure the safe and orderly flow of air traffic. In many cases, this involves communication with ATC, which commonly requires a pilot or drone operator to request and receive clearance before entering or operating within this space.

This requirement is in place to maintain safety and prevent collisions between aircraft, particularly in areas of heightened traffic. The process typically includes submitting a request through a system like the FAA's Low Altitude Authorization and Notification Capability (LAANC) for drones, which facilitates the authorization process in real-time.

Flying a certain altitude, using a visual observer, or filing a flight plan may be important under various circumstances, but they do not specifically address the requirement of authorization for entering controlled airspace.