In which scenario are you permitted to transmit an 'SOS' or 'MAYDAY' using your amateur station?

In amateur radio, the use of 'SOS' or 'MAYDAY' is reserved for situations where there is an immediate and life-threatening distress. This aligns with the established protocols for distress signals that are recognized internationally, which serve to alert other operators that someone is in severe trouble and needs help urgently.

Using these distress signals in circumstances where life is not at risk, such as during routine communication checks or non-life-threatening situations, is not appropriate because it could lead to confusion and divert resources from genuine emergencies. Similarly, transmitting during unrelated activities, like drilling operations, does not constitute a legitimate use of these distress signals as it doesn't indicate an urgent need for assistance.

Thus, the correct scenario for transmitting an 'SOS' or 'MAYDAY' is strictly limited to life-threatening distress situations, ensuring that when such a call is made, it unequivocally signifies the need for immediate assistance.