ABSTRACT
Airport operations and capacity are heavily influenced by prevailing weather situation. Abrupt changes in the wind near the ground pose serious hazards to an aircraft during approach for landing or departure. The aircraft pilot and traffic controller may perceive different environment conditions. Inconsistent information between pilot and controller increases voice communications. Ad hoc decisions result, often accompanied by negotiations. These leads to delay and higher workload, specially in critical time periods of bad weather. One of the most dangerous weather hazard is wind shear. The hazard from wind shear is the resultant change in the lift of an aircraft. When sustained for a significant duration, the loss or gain in lift can lead to performance problems, especially hazardous at low altitudes. By advanced technology it is possible to detect wind shear in the terminal area of an airport, and worn the pilot well before a possible encounter.
