(Refer to Area 2.) Identify the airspace over Bryn Airport.

Question

(Refer to Area 2.) Identify the airspace over Bryn Airport.

BlackTom AI · Accepted Answer

First, let's lay out what the airspace designations typically look like over many general aviation fields in the U.S. Class G generally extends from the surface up to either 700 or 1,200 feet AGL, depending on the surrounding Class E transition areas. Once you reach the base of Class E, which is usually at 700 or 1,200 feet AGL, airspace becomes Class E up to 18,000 feet MSL. With that framework in mind, examine each option.
Option 1: 'Class G airspace -- surface up to but not including 1,200 feet AGL; Class E airspace -- 1,200 feet AGL up to but not including 18,000 feet MSL.' This matches the common configuration where Class G ends at 1,200 feet AGL and Class E begins at 1,200 feet AGL and continues up to 18,000 feet MSL. It aligns with the standard two-tier structure of Class G then Class E.
Option 2: 'Class G airspace -- surface up to but not including 700 feet MSL; Class E airspace -- 700 feet to 14,500 feet MSL.' This wording uses 700 feet MSL as the boundary for Class G, which is inconsistent with typical U.S. airspace where the boundary is stated in AGL (feet above ground level), not MSL (mean sea level). Also, Class E extending only to 14,500 feet MSL omits the 18,000-foot ceiling where Class E continues to in reality.
Option 3: 'Class G airspace -- surface up to but not including 18,000 feet MSL.' This would imply Class G extends all the way to 18,000 feet MSL, which is incorrect because Class E begins well before that altitude and continues up to 18,000 feet MSL.
Putting these observations together, Option 1 correctly reflects the standard arrangement: Class G from the surface up to 1,200 feet AGL, then Class E from 1,200 feet AGL up to 18,000 feet MSL. The other options misstate the base altitude for Class G in MSL terms or extend Class G far beyond its actual limit, leading to inaccuracies in understanding the airspace structure.

(Refer to Area 2.) Identify the airspace over Bryn Airport.单项选择题

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(Refer to Area 2.) Identify the airspace over Bryn Airport.

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