What is a Class E transition area?

• A. Airspace designated to provide weather minimums only for IFR flights.
• B. Airspace that has no effect on airspace structure.
• C. Airspace where Class E begins at 700 or 1200 AGL before becoming standard Class E; used to transition from uncontrolled to controlled airspace.
• D. Airspace located only above FL300.

Answer: (C)

Class E transition areas provide a stepping-stone from uncontrolled airspace to controlled airspace. In these regions, the floor of the airspace is set low—either 700 feet AGL or 1200 feet AGL—and airspace above that floor up to the base of the surrounding Class E is Class E. This arrangement gives IFR traffic ATC protection as it moves from entering the area near an airport with instrument procedures into the higher-level controlled airspace, while still allowing pilots flying VFR to transition smoothly. It’s not about weather minimums, and it does affect how airspace is structured because it specifies where controlled airspace starts near the surface. It also isn’t restricted to very high altitudes like above FL300; these transitions exist well below that level.