What is the floor of the Savannah Class C airspace at the shelf area (outer circle)?

• A. 1,000 feet MSL
• B. 1,300 feet MSL
• C. 1,500 feet MSL
• D. 2,000 feet MSL

Answer: (B)

Class C airspace is arranged with a surface core and a surrounding shelf. The shelf starts at a base of 1,200 feet above the airport (AGL) and rises to the top of the controlled airspace, which is typically about 4,000 feet above the airport. To compare that floor to the surface, you convert to mean sea level by adding the airport’s elevation. Savannah’s field elevation is around 100 feet MSL, so 1,200 feet AGL translates to roughly 1,300 feet MSL. That makes the floor of the outer circle around Savannah about 1,300 feet MSL. The other options either lie below the shelf floor or well above it, so they don’t fit.