National Airspace System

Mandatory instruction signs are used to denote an entrance to a runway or critical area and areas where an aircraft is prohibited from entering. The runway holding position sign is located at the holding position on taxiways that intersect a runway or on runways that intersect other runways.

NOTAMs provide the most current information available and can be found by visiting www.faa.gov or obtained from an FSS. A comprehensive weather briefing can be obtained as part of a standard preflight briefing.

A NOTAM may be issued for reasons including hazards, such as air shows. The NOTAM will include the location and time for the affected region. UAS operations should stay away from these locations during the timeframe defined by the NOTAM. Once the NOTAM is over, UAS operations may resume with ATC authorization.

Obstacles are depicted as an upside-down V. The top number, printed in bold, is the height of the obstruction above mean sea level. The second number in parentheses is the height of the obstruction above ground level. The highest obstacle 2 NM northeast of Hertford is 500 feet AGL.

Runway hold markings are indicated by two dashed and two solid yellow lines. You are considered to be on the taxiway on the double solid yellow line side while you are considered to be on the runway if on the double dashed yellow line side.Answer (A) is incorrect because the double dashed yellow line would indicate you are on the taxiway. Answer (B) is incorrect because the dashed white centerline markings would indicate that you are on the runway.

When a manned aircraft is approaching to land at an airport in Class G airspace without an operating control tower, each pilot of an airplane will make all turns to the left unless the airport displays approved light signals or visual markings indicating that turns should be made to the right (which will be detailed in the Chart Supplement U.S. Answer (A) is incorrect because the traffic pattern altitude will vary for each airport and aircraft; however, all turns should be to the left unless otherwise indicated. Answer (C) is incorrect because the traffic pattern altitude will vary for each airport and aircraft; however, all turns should be to the left unless otherwise indicated.