What is the VHF Guard frequency used for emergency communication?

The correct frequency for emergency communication is 121.5 MHz. This frequency is designated as the international VHF emergency frequency and is used for distress calls, search and rescue operations, and to alert other aircraft and ground stations in the event of an emergency. The global standardization of this frequency ensures that pilots and co-pilots can effectively communicate their situation to others, whether they are in-flight or on the ground, enhancing safety and facilitating rapid response in emergencies.

In aviation, the importance of having a universally recognized emergency frequency cannot be overstated. It allows for a rapid and coordinated response from various air traffic control agencies and other aircraft in the vicinity, thereby improving the chances of a successful resolution to an emergency situation.

Other frequencies mentioned serve different purposes; for instance, 123.0 MHz is commonly used for non-towered airport communications, while 119.5 MHz is often used for air traffic control communications. 120.7 MHz may also serve specific roles in aviation communication, but none of these are designated specifically for emergencies like 121.5 MHz is.