Flight Planning and Navigation Flashcards

When planning a commercial UAS flight in the UK, which source should a remote pilot consult for active airspace restrictions and NOTAMs?

Answer: NATS Drone Assist app or the UK AIS website

The NATS Drone Assist app and UK Aeronautical Information Service (AIS) website are the authoritative sources for checking active airspace restrictions, NOTAMs (Notices to Airmen), and temporary danger areas. These provide real-time and planned restriction data essential for safe flight planning.

What is the purpose of a site survey before conducting a commercial UAS operation?

Answer: To identify hazards, assess the operating environment, and determine suitable take-off and landing areas

A site survey allows the remote pilot to identify physical hazards (power lines, trees, buildings), assess ground conditions, determine suitable launch and recovery points, evaluate electromagnetic interference risks, and identify uninvolved persons who may be present. This feeds directly into the operational risk assessment.

What is the 'Flight Restriction Zone' (FRZ) around a UK aerodrome?

Answer: A defined zone around an aerodrome where drone flights require permission from the air traffic control unit

A Flight Restriction Zone is a defined area of airspace around a UK aerodrome (typically extending to a radius of approximately 2.5 nautical miles) where UAS flights are restricted. Drone pilots must obtain permission from the relevant air traffic control unit before flying within an FRZ.

Which coordinate reference system is most commonly used for UAS flight planning and navigation in the UK?

Answer: WGS84 (World Geodetic System 1984)

WGS84 is the standard coordinate reference system used in aviation worldwide, including UK UAS operations. GNSS receivers (GPS, GLONASS, Galileo) use WGS84, and aviation charts and airspace definitions are based on this datum.

When planning a UAS flight, what is the significance of 'magnetic declination'?

Answer: It is the angular difference between true north and magnetic north, affecting compass-based navigation

Magnetic declination (or variation) is the angle between true north and magnetic north at a given location. It affects any compass-based navigation and must be accounted for when correlating chart bearings (referenced to true north) with compass readings on the UAS or controller.

What information would you expect to find in a NOTAM that is relevant to UAS flight planning?

Answer: Temporary airspace restrictions, military exercises, or aerial events that affect the planned route

NOTAMs (Notices to Airmen) provide time-critical aeronautical information including temporary airspace restrictions, military exercises, aerial work, temporary danger areas, and other hazards. UAS pilots must check NOTAMs as part of pre-flight planning to ensure they do not fly into restricted areas.