Low Level Wind Shear Alert System (LLWAS)
Definition
A Low Level Wind Shear Alert System (LLWAS) is a ground-based device used to locate wind shear and associated climate phenomena, such as microbursts, near an airport; mainly alongside the runway corridors. This facts can then be passed, in real-time, to warn pilots and aerodrome services.Low Level Wind Shear is defined as a sudden alternate of wind speed and/or course in both the vertical or horizontal planes. At low level, i.e. When plane are departing from or landing at an aerodrome, wind shear can present a severe chance to flight safety. Therefore, well timed warnings are crucial to assist pilots reply appropriately.