nonessential information to reduce frequency congestion. pilots of radar-identified aircraft whose aircraft is in dangerous proximity to terrain or to an obstruction. non control information in selected high-activity terminal areas.
The flag indicates that there will be a large obstruction depicted on ...
a nonpublic-use airport. an airport restricted to use by private and recreational pilots. a restricted ...
Airports with control towers underlying Class C, D, and E airspace are shown in magenta. Airports with control towers underlying Class B, C, D, and E airspace are shown in blue. Airports with control towers underlying Class A, B, and ...
Refer to the legend for special use airspace phone number. This information is ...
High density military operations in the vicinity. Unmarked balloon on a cable up ...