A2 CofC Meteorology for Drone Pilots

Question 1

What wind speed measurement unit is most commonly used in UK aviation weather reports relevant to drone pilots?

Accepted Answer

Knots (kt)

Answer

UK aviation weather reports (METARs, TAFs) use knots as the standard unit for wind speed. Drone pilots should familiarise themselves with knots and know their aircraft's wind speed limits in knots to interpret these reports correctly.

Question 2

What is a METAR and how is it useful for drone pilots?

Accepted Answer

A routine aviation weather report giving current conditions at an aerodrome including wind, visibility, cloud, and temperature

Answer

A METAR is a standardised, coded aviation weather observation report issued at regular intervals (typically hourly or half-hourly). Drone pilots can use METARs from nearby aerodromes to assess current conditions such as wind speed, visibility, and cloud base before flying.

Question 3

Which weather phenomenon poses the greatest risk to drone batteries and electronic components?

Accepted Answer

Very low temperatures (below 0°C)

Answer

LiPo batteries suffer significantly reduced capacity and voltage in low temperatures, which can cause sudden power loss and in-flight failure. Electronics are also vulnerable to condensation when moving between cold and warm environments. Most manufacturers specify minimum operating temperatures.

Question 4

What is the significance of a temperature inversion for drone pilots?

Accepted Answer

It can cause reduced visibility and fog near the ground while conditions are clear at altitude

Answer

A temperature inversion (where temperature increases with altitude rather than decreasing) can trap moisture and pollutants near the surface, creating fog, mist, or smog. Visibility may be poor at drone operating altitudes even when overhead conditions appear clear, reducing the pilot's ability to maintain visual line of sight.

Question 5

What does 'wind shear' mean and why does it matter for drone pilots?

Accepted Answer

A sudden change in wind speed or direction over a short distance, which can cause loss of control

Answer

Wind shear occurs when adjacent air masses move at different speeds or directions. For drones, wind shear can cause sudden, unpredictable attitude changes and may exceed the drone's ability to self-correct, leading to loss of control — particularly dangerous near obstacles.

A2 CofC Drone Practice Test

A2 CofC Drone Practice Test

A2 CofC Meteorology for Drone Pilots