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The aircraft emergency frequency (also known in the USA as Guard) is a frequency used on the aircraft band reserved for emergency communications for aircraft in distress.The frequencies are 121.5 MHz for civilian, also known as International Air Distress (IAD), International Aeronautical Emergency Frequency, [1] or VHF Guard, [1] and 243.0 MHz—the second harmonic of VHF guard—for military ...
Aerodrome traffic frequency ATFM Air traffic flow management: ATIS Automatic Terminal Information Service: ATM Air traffic management: ATN Aeronautical Telecommunication Network: ATO Approved Training Organisation ATPL Airline Transport Pilot Licence: ATQP Alternative Training and Qualification Programme ATR 1 1: Air transportable racking ATR 2
The main discussion of these abbreviations in the context of drug prescriptions and other medical prescriptions is at List of abbreviations used in medical prescriptions. Some of these abbreviations are best not used, as marked and explained here.
Distance measuring equipment – (DME), is a radio navigation technology that measures the slant range (distance) between an aircraft and a ground station by timing the propagation delay of radio signals in the frequency band between 960 and 1215 megahertz (MHz). Line-of-visibility between the aircraft and ground station is required.
The radiotelephony message PAN-PAN is the international standard urgency signal that someone aboard a boat, ship, aircraft, or other vehicle uses to declare that they need help and that the situation is urgent, [1] [2] [3] but for the time being, does not pose an immediate danger to anyone's life or to the vessel itself. [4]
During World War I, air transport was used to provide medical evacuation – either from frontline areas or the battlefield itself.. In 1928, in Australia, John Flynn founded the Flying Doctor Service (later the Royal Flying Doctor Service), to provide a wide range of medical services to civilians in remote areas; these included from routine consultations with travelling general practitioners ...
RAAS functions by providing audible alerts to confirm runway identification, and also provides an aural alarm if it detects undue acceleration (indicating an attempt to take off) while the aircraft is on any taxiway instead of a designated runway.
An emergency locator beacon is a radio beacon, a portable battery powered radio transmitter, used to locate airplanes, vessels, and persons in distress and in need of immediate rescue.