👉 The term "topmast" generally refers to a tall or prominent mast in an aircraft, usually used to indicate the flight's highest point. It is often found on the ends of helicopters, which are commonly used for aerial surveillance and search-and-rescue operations. Aircraft typically have two types of topmasts: the main topmast (also known as the cockpit topmast) and the tailtopmast (also known as the landing topmast). The main topmast is responsible for providing stability