When transmitting a distress message, what is the first thing to say?

In a distress situation, the correct phrase to initiate communication is "MAYDAY." This term is universally recognized as a distress signal that indicates a life-threatening emergency, particularly in aviation and maritime contexts. The use of "MAYDAY" serves to automatically alert other operators that urgent assistance is required.

This term is crucial because it is standardized internationally, making it clear to any listener or colleague that immediate action is necessary. It conveys not just the need for help but the severity of the situation. Other phrases might convey a need for assistance, but "MAYDAY" is the unequivocal call for immediate rescue, which is critical in distress scenarios.