If a helicopter and an airplane are converging at a 90° angle and the helicopter is to the right of the airplane, which aircraft has the right-of-way?

In situations where a helicopter and an airplane are converging, the right-of-way is primarily determined by the type of aircraft and their respective flight rules. According to standard aviation regulations, when two aircraft are approaching each other at a 90° angle, the aircraft that has the other on its right side must yield.

In this case, since the helicopter is to the right of the airplane, the airplane has the right-of-way. This is consistent with the general rule that in a right-hand seat driving context (as used in aircraft operations), the aircraft on the left must give way to the aircraft on the right. The reasoning is based on ensuring safe and efficient traffic flow in the air, with priority given to one type of aircraft over another to minimize the risk of collision.

Thus, the correct answer reflects the established rules of air traffic concerning the hierarchy of right-of-way in situations involving convergence between different types of aircraft.