National Airspace System

Refer to Appendix 1, Legend 1. On Figure 23, area 3, the group obstruction near the 009 degree radial has the word "stacks" below 454. The bold number (454) indicates the height of the obstruction above mean sea level.

Runway holding position markings on taxiways identify the locations on a taxiway where an aircraft is supposed to stop when it does not have clearance to proceed onto the runway.

Entries into traffic patterns while descending create specific collision hazards and should be avoided.

The FAA Near Midair Collision System (NMACS) indicates that 81% of the incidents occurred in clear skies and unrestricted visibility conditions.

The "47" at area 4 is the line of latitude (also called parallels) is north and south from the equator.

No person may operate an sUA in Class B, Class C, or Class D airspace or within the lateral boundaries of the surface area of Class E airspace designated for an airport unless that person has prior authorization from ATC.