PAR46 aviation indicator light is a specific specification of aviation lights, usually used to indicate the position and direction of the aircraft. It gets its name from its bulb size, which is 4.6 inches (about 117 mm) in diameter.
PAR46 aviation indicator lights are usually used in air traffic control, airports, airstrips and other places to indicate the position and direction of the aircraft and help pilots and ground staff to carry out safe flight operations. These lights are usually installed on the wingtips, fuselage, tail and landing gear of the aircraft to ensure that the aircraft can be accurately spotted and identified at night or in low visibility conditions.