Which flight classification requires a coded transponder equipped with altitude reporting equipment?

The classification that requires a coded transponder equipped with altitude reporting equipment is indeed Class A, B, and C airspace. This requirement stems from safety and situational awareness needs in areas where air traffic is more congested and diverse.

In Class A airspace, which extends from 18,000 feet MSL up to and including FL 600, the use of a transponder is critical for maintaining separation among various aircraft and ensuring that air traffic control can effectively manage flight operations. Similarly, in Class B airspace, which surrounds major airports, and Class C airspace, which is typically associated with airports with a moderate level of air traffic, the transponder is essential for tracking the altitude of aircraft and preventing potential collisions.

These airspaces require pilots to have a transponder due to the increased density of traffic and the need for efficient air traffic management. With altitude reporting capabilities, the transponder allows air traffic control to receive critical information about the aircraft's altitude, facilitating safe vertical separation from other aircraft operating in the same region.

In contrast, other classifications such as Class D and E airspace do not uniformly require a transponder with altitude reporting, making them less restrictive in this regard. Therefore, the comprehensive requirement for a coded trans