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Air traffic control signal light gun in use at base flight tower. In the case of a radio failure or aircraft not equipped with a radio, or in the case of a deaf pilot, air traffic control may use a signal lamp (called a "signal light gun" or "light gun" by the FAA [1] [2]) to direct the aircraft.
List of U.S. military vehicles by model number ... Antiaircraft Artillery Gun Battalion, Mobile, dated 17 November 1944; T/O&E 11-57, Armored Signal Company, dated 15 ...
If VFR conditions do not exist, the pilot will then continue the route last assigned by ATC. See FAR 91.185. Air traffic control may re-establish communications with NORDO aircraft by using emergency frequencies, voice features of NAVAIDs , or aviation light signals .
Radio frequency jammers are devices that interfere with communications systems, usually by sending out competing radio signals to confuse nearby electronics. It is a decades-old technology that ...
An Ottoman heliograph crew using a A Blinkgerät (left) Begbie signalling oil lamp, 1918 Signal lamps were pioneered by the Royal Navy in the late 19th century. They were the second generation of signalling in the Royal Navy, after the flag signals most famously used to spread Nelson's rallying-cry, "England expects that every man will do his duty", before the Battle of Trafalgar.
Ordnance crest "WHAT'S IN A NAME" - military education about SNL. This is a historic (index) list of United States Army weapons and materiel, by their Standard Nomenclature List (SNL) group and individual designations — an alpha-numeric nomenclature system used in the United States Army Ordnance Corps Supply Catalogues used from about 1930 to about 1958.
The antenna system of a typical air traffic control radar, the ASR-9. The curved reflector antenna on the bottom is the primary surveillance radar (PSR), and the flat antenna on top of it is the secondary surveillance radar (SSR). In operation the antenna rotates about a vertical axis, sweeping a vertical fan-shaped beam of microwaves around ...
All metal-linked ammunition was reserved for the Army Air Force and Naval Aviation. When the US Army Air Force .30-caliber machine gun was superseded by the .50-caliber machine gun mid-war, all .30-caliber ammunition began to be belted in M1 250-round belts for infantry use or M3 100-round woven belts for use in vehicles and tanks.