Hot spots are tabulated with a brief description of each hot spot.Wrong surface hot spots are depicted with cylinders and indicate locations where aircraft have inadvertently attempted to or depart or land on the wrong surface.Circles or ellipses are for ground movement hot spots known to cause issues like hold short line infractions, approach hold issues, complex taxiways, movement/nonmovement boundary area issues, tower line-of-sight problems, and marking and signage issues.Hot spots are depicted on airport diagrams as circles or ellipses and cylinders:.The area of increased risk has either a history of or potential for runway incursions or surface incidents, due to a variety of causes, such as but not limited to:.Typically it is a complex or confusing taxiway/taxiway or taxiway/runway intersection.A "hot spot" is a runway safety related problem area on an airport that presents increased risk during surface operations.An "Airport Surface Hot Spot" is a location on an aerodrome movement area with a history or potential risk of collision or runway incursion, and where heightened attention by pilots/drivers is necessary.Airport diagrams are not intended to be used for approach and landing or departure operations.They are further broken down into 5 second ticks, within each 1-minute increments Geographical coordinate grid - Coordinate values are shown in 1 or 1/2 minute increments.True/magnetic north orientation, date, and annual rate of change - true/magnetic north orientation may vary from diagram to diagram, i.e., north may not be at the top of the page.Location/identification of buildings, control tower, airport beacon, and other structures.Position and identification of taxiways, ramps and parking areas.Location of arresting gear, barriers, and displaced thresholds.Runway heading to the nearest tenth of a degree.Runway dimensions, elevations, and gradient (if greater than 0.3° up or down).Airport diagrams are specifically designed to assist in the movement of ground traffic at locations with complex runway/taxiway configurations and provide information for updating computer based navigation systems (INS) aboard aircraft.
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