Unless otherwise specified, Federal airway include that class E airspace extending upward from

Unless otherwise specified, Federal airway include that class E airspace extending upward from

• A. 1,200 feet above the surface up to and including 17,999 feet MSL
• B. 1,000 feet above the surface up to 14,500 feet MSL
• C. 700 feet above the surface up to 9,000 feet MSL
• D. 2,000 feet above the surface up to 19,999 feet MSL

Answer: (A)

Federal airways are the VOR-based routes that sit in Class E airspace. The standard vertical extent is from 1,200 feet above the surface up to and including 17,999 feet MSL. This range provides a controlled airspace corridor for IFR traffic just above the surface and continues up to but not including the floor of Class A, which begins at 18,000 feet MSL. Note there are exceptions where Class E starts at 700 feet AGL or at the surface in some areas, but those are not the standard federal airway configuration.

Federal airways are the VOR-based routes that sit in Class E airspace. The standard vertical extent is from 1,200 feet above the surface up to and including 17,999 feet MSL. This range provides a controlled airspace corridor for IFR traffic just above the surface and continues up to but not including the floor of Class A, which begins at 18,000 feet MSL. Note there are exceptions where Class E starts at 700 feet AGL or at the surface in some areas, but those are not the standard federal airway configuration.