Wind Shear
Wind shear is a sudden, drastic change in wind speed and/or direction over a very small area. (FAA, 2016). Low-Level Wind Shear (LLWS) considered one of the most hazardous weather phenomena due to the proximity of airplanes to the ground when encountering a wind shear. Pilots need to be well trained to react immediately when encountering a wind shear, as those sudden changes are rapidly affecting the airplane's performance and cause changes to the airplane attitude, including violent updrafts, downdrafts and abrupt horizontal movement. Low-Level Windshear The most severe type of wind shear is a Microburst. A microburst is an aggressive degradation in performance that can produce downdrafts of up to 6000 feet per minute in a lifespan of 5 to 15 minutes. The effects of microburst winds consist of performance increasing headwind, followed by a downdraft, and performance decreasing tailwind. Therefore, encountering a microburst during the initial climb after take-off or on a final ap