Air-ground radiotelephone service:
The air-ground radiotelephone service is a VHF communication system that enables communication between aircraft and ground stations. In case of an emergency, pilots can use this service to establish contact with air traffic control (ATC) or other relevant authorities. The air-ground radiotelephone service operates on specific VHF channels designated for emergency communications, ensuring that critical information is transmitted without interference.
Airband:
Airband refers to the range of VHF frequencies allocated for aviation communication. Within the airband spectrum, certain channels are reserved for emergency use. These emergency channels are monitored by ATC facilities and search and rescue teams to facilitate rapid response in case of distress calls. Pilots are trained to switch to these designated emergency channels when facing critical situations to request assistance and coordinate rescue efforts.
Distress signal:
In aviation, a distress signal is a means of indicating that an aircraft is in imminent danger and requires immediate assistance. One of the most recognized distress signals in aviation is the "Mayday" call. When a pilot broadcasts a Mayday call over the designated emergency VHF channels, it signals that the aircraft and its occupants are facing a life-threatening situation and need urgent help. The Mayday call is a universal distress signal that is understood by air traffic controllers and search and rescue teams worldwide.
Mayday:
The term "Mayday" is derived from the French word "m'aider," which translates to "help me." When a pilot issues a Mayday call, they are signaling that their aircraft is in grave danger and requires immediate assistance. The Mayday call is typically transmitted three times in a row to ensure that the distress signal is clearly understood. Pilots are trained to use the Mayday call only in situations where there is an imminent risk to the safety of the aircraft and its occupants.
Transponder (aeronautics):
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