If a distress message does not receive a response, what should the aircraft do?

When an aircraft sends out a distress message and does not receive a response, it is essential to maintain communication with any potential rescuers. Attempting transmission on any other available frequency is a crucial step in this scenario. This action increases the chances of someone monitoring a different frequency to pick up the distress call.

The rationale behind this choice stems from the fact that distress frequencies, such as 121.5 MHz, are monitored by search and rescue organizations, but there may be instances where those frequencies are busy or there is interference. By trying different frequencies, the aircraft can reach another station that might be able to assist or relay the distress message.

Engaging in secure communications or waiting for the original frequency to clear may not effectively facilitate immediate assistance during a distress situation. Switching off the radio, on the other hand, would eliminate the possibility of contacting rescuers altogether, which could have dire consequences in an emergency. Therefore, the optimal action is to try transmitting on any other available frequency to maximize the chances of receiving help.