What could be a reason for a pilot to utilize a PANPAN call instead of a mayday call?

A PANPAN call is used by pilots to signify an urgent situation that requires attention but is not an immediate threat to life or the safety of the aircraft. This call indicates that the pilot is facing a situation that, while serious, does not rise to the level of a mayday call, which is reserved for emergencies where there is an imminent danger to life or the aircraft.

In contexts where the aircraft may have technical issues, passenger health concerns, or other urgent matters that require assistance but do not pose an immediate danger, a PANPAN call is appropriate. Thus, this choice reflects the correct use of communication protocols in aviation, distinguishing between varying levels of urgency effectively.