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From the 1970s airliners used inertial navigation systems, especially on inter-continental routes, until the shooting down of Korean Air Lines Flight 007 in 1983 prompted the US government to make GPS available for civilian use. Finally, an aircraft may be supervised from the ground using surveillance information from e.g. radar or multilateration.
Term Notes B RNAV Basic area navigation BARO Barometric indication, setting or pressure baro-VNAV Barometric vertical navigation BC Back course: Or 'BCRS' BCAA Belgian Civil Aviation Authority: BDC bottom dead centre [1] Piston engine BDI Bearing distance indicator BFL Balanced field length: BFR Biennial flight review: BGAN Broadcast Global ...
AAW An acronym for anti-aircraft warfare. aback (of a sail) Filled by the wind on the opposite side to the one normally used to move the vessel forward.On a square-rigged ship, any of the square sails can be braced round to be aback, the purpose of which may be to reduce speed (such as when a ship-of-the-line is keeping station with others), to heave to, or to assist moving the ship's head ...
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Communication, i.e. aviation communication, refers to communication between two or more aircraft, the exchange of data or verbal information between aircraft and air traffic control and the ground based communication infrastructure of the ATM network (like the aeronautical fixed service). [2]
Automatic direction finder – (ADF) is a marine or aircraft radio-navigation instrument that automatically and continuously displays the relative bearing from the ship or aircraft to a suitable radio station. [25] [26] Avionics – are the electronic systems used on aircraft, artificial satellites, and spacecraft. Avionic systems include ...
The most common use of the TVMDC method is deriving compass courses during nautical navigation from maps. The inverse correction from compass heading to true heading is "CDMVTAE", with compass heading, deviation, magnetic heading, variation, true heading, add easterly The most common use of the CDMVTAE rule is to convert compass headings to map ...
Low-frequency radio range audio signals: N stream, A stream and combined uniform tone (simulated sounds) The low-frequency radio range, also known as the four-course radio range, LF/MF four-course radio range, A-N radio range, Adcock radio range, or commonly "the range", was the main navigation system used by aircraft for instrument flying in the 1930s and 1940s, until the advent of the VHF ...