![]() ![]() In fact, mountainous locations in the clouds simply report it as fog. With both fog and clouds, the water droplets or ice crystals are so small that gravity has a negligible effect, and thus they remain suspended. For aviation interests, the point is moot since physically clouds and fog are the same thing - minute water droplets or ice crystals suspended in the air. Low clouds that may obscure mountainous terrain generally are not defined as fog. To review the basics, fog is simply a cloud near or in contact with the earth’s surface - usually flat ground. The captain of the departing aircraft and the traffic control tower could not see that the landing 747 was still on the runway, leading to the crash that killed 583 people. The worst aviation disaster of all time, the collision of two Boeing 747s in Tenerife, Canary Islands, involved fog. Regardless of whatever factor is eventually designated as the primary cause of the crash, fog clearly limited the airport’s visibility.Īviation accidents in which fog plays a major role often prove fatal. Preliminary reports say the flight crew had been warned of reduced visibility and was told to divert to another airport, and that they attempted the landing anyway. Short of the runway, the plane struck trees and broke apart. At 0841 local time on April 10, 2010, a Tupolev 154M passenger jet carrying the president of Poland, his wife and numerous government officials crashed about 1 km (0.6 mi) from the Smolensk Airport in Russia, killing all 96 people aboard. ![]()
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