What is the emergency frequency for distress calls?

The emergency frequency for distress calls is 121.50 MHz. This frequency is specifically designated as the international distress frequency for aircraft and is recognized worldwide. It is used for emergency communications by pilots to call for help or report distress situations. Because 121.50 is the universally accepted frequency for this purpose, it is important for pilots to be familiar with its use in emergencies.

Other frequencies mentioned, such as 121.75, 121.45, and 122.85, do not serve the same universal purpose for distress calls. While they may have other uses in aviation communications, they are not designated for emergency distress signaling. Understanding the unique role of 121.50 MHz in emergency situations is crucial for ensuring immediate assistance can be summoned when needed.