"Singular" is is pretty much the same as "one", they both mean a lone object.
An aircraft is usually granted the right-of-way when they are in distress
<h3>What is Right-of-Way?</h3>
This refers to the legal right that a vehicle or aircraft has to pass a route that is a territory of another. This is usually done when there is distress on the part of an aircraft.
Furthermore, some air crafts that have right-of-way over others are:
Hence, we can see that your question is incomplete so I gave you a general overview to help you get a better understanding of the concept.
Read more about right-of-way here:
brainly.com/question/13393277
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