Traditional Culture Encyclopedia - Weather inquiry - Can the plane take off in foggy weather?
Can the plane take off in foggy weather?
The plane had to be grounded in fog, strong wind and heavy rain. Because when the plane takes off and lands, due to the bad weather, the line of sight is not clear, which is not only difficult, but also extremely risky. When taking off and landing, once the pilot makes mistakes in judgment and operation, the plane may run off the runway or be destroyed. Therefore, when the vision is affected in foggy days, airports and highways have to be closed, which will inevitably cause unnecessary heavy losses. \ x0d \ x0d \ In foggy weather, when the water vapor in the lower atmosphere is saturated, the water vapor condensate is suspended in the air to form foggy weather, and the horizontal visibility distance is less than 500m. In meteorology, this weather phenomenon is called fog. However, the visibility requirement for aircraft take-off is at least 600 meters, and the landing requirement for aircraft is even higher than the take-off requirement. Therefore, for the safety of passengers, the plane will only take off when the weather is seaworthy. Due to poor visibility in foggy days, it is difficult for aircraft to take off and land, otherwise it may cause accidents. \x0d\ However, in bad weather, pilots can use the instrument landing system to guide the plane to land, which is also commonly known as "blind landing". According to the accuracy and landing standards of instrument landing systems, ICAO classifies instrument landing systems into Class I, Class II and Class III. The minimum standard is a blind descent, the horizontal visibility is above 800 meters, and the runway can be seen clearly with the naked eye; The second type of blind descent refers to taking off and landing within the visibility range of 400 to 600 meters; The highest standard is three kinds of blind descent. You can't see the runway effectively at any height. Pilots can only make their own landing decisions and rely entirely on instruments to realize the take-off and landing of aircraft. What kind of blind landing aircraft can achieve what kind of effect is determined by weather conditions, airport equipment support capacity, aircraft technical status and pilot's comprehensive technical level.
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