Prior to every flight for sure. A vehicle stopping on a road is quite different to a drone or any airborne vehicle dropping from the sky. As an active RC plane flyer and modeler for over fifty years, I still check all functions, engine/s...
It seems more and more drones are swallowed up by the mighty ocean due to pilot miscalculations.
Having sailed across the English Channel and seas south of the UK several times in the 90's, having faced 20'-30'+ waves in Lyme Bay during a...