Drone exam · Meteorology

Thin fog is lifting from a field and the launch point is clear. The planned route crosses a shallow low area where fog remains. What is the safer interpretation?

Answer

Treat the remaining fog as a route hazard and wait or alter the mission rather than assuming the clear launch point represents the entire area.

Explanation

Fog often varies over short distances and can reform. A clear patch at the pilot's position does not guarantee clear conditions along the route.