Visibility
As mentioned before, it started with red balls. Very clearly visible, you would think. But the result turned out to be disappointing. They switched to orange balls. Research by the American flight authorities showed that they are much more visible to pilots. You can imagine that the bright orange stands out more in the dark than a red ball. After all, the ultimate goal is that pilots can see where they are flying. And that is why the flight authorities have rules in place for this.
Credit: Pixabay, Alexas_Fotos
Curious what the rule is for this? Then continue to the next page.