High volume of pilot training or an unusual type of aerial activity. Unusual, often invisible, hazards such as aerial gunnery or guided missiles. Military training activities that necessitate acrobatic or abrupt flight maneuvers.
Understanding Airspace
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Class A is not charted. A solid and dotted magenta line A solid gray line
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is required to file a flight plan. must use a visual observer. is required to receive ATC authorization.
1200 feet AGL. 4000 feet AGL. 1200 feet MSL.


