|
Blue ice in the context of aviation is frozen sewage material leaked mid-flight from commercial aircraft lavatory waste systems, a biowaste mixture of human waste and liquid disinfectant that freezes at high altitude. The name comes from the blue color of the disinfectant. Airlines are not allowed to dump their waste tanks in mid-flight, and pilots have no mechanism by which to do so; however, leaks can occur. ==Danger of ground impact== There were at least 27 documented incidents of blue ice impacts in the United States between 1979 and 2003.〔 〕 These incidents typically happen under airport landing paths as the mass warms sufficiently to detach from the plane during its descent. A rare incident of falling blue ice causing damage to the roof of a home was reported on October 20, 2006 in Chino, California. A similar incident was reported in Leicester, UK, in 2007.〔(Frozen Pee Anyone? ) BBC〕 In 1971, a chunk of ice from an aircraft tore a large hole in the roof of the Essex Street Chapel in Kensington, London, and was one trigger for the demolition of the building.〔(''Essex Church in Kensington 1887-1987: History of a Unitarian Cause'' p25, by Raymond Williams )〕 In November 2011 a chunk of ice, the size of an orange, broke through the roof of a private house in Ratingen-Hösel, Germany. In February 2013 a "football sized" ball of blue ice smashed through a conservatory roof in Clanfield, Hampshire causing around £10,000 worth of damage.〔 () BBC〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Blue ice (precipitation)」の詳細全文を読む スポンサード リンク
|