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随着全球变暖,森林火灾形势日趋严峻,特别是在北美和澳大利亚,每年夏季都会发生多起严重的森林火灾,迫切需要用灭火剂装载量更大、技术更先进的大型灭火飞机取代老旧的螺旋桨灭火飞机。目前,仅北美地区就有超过150架、涵盖16个机型的森林灭火飞机超期服役,亟待更新。受全球经济危机影响,近年来国际民航业已有数百架大型客、货机提前退役,为森林火灾灭火飞机的改造升级提供了难得机遇。为此,美国联邦航空局(FAA)开展了将DC-10(麦道-10)和B747(波音747)等“超大型运输机”
With global warming, the situation of forest fires is becoming more and more severe. In North America and Australia in particular, serious forest fires occur every summer. There is an urgent need to replace the old ones with large-scale fire-fighting aircraft with more fire-extinguishing agents and more technologically advanced technologies Propeller Extinguishing Aircraft. At present, there are over 150 aircraft in North America alone. Over 16 forest fire extinguishing aircraft are in service and need to be updated urgently. Affected by the global economic crisis, in recent years, hundreds of large passenger and cargo aircraft have already been retired in the international civil aviation industry, providing a rare opportunity for the transformation and upgrading of forest fire extinguishing aircraft. To this end, the United States Federal Aviation Administration (FAA) launched a “large transport aircraft” such as DC-10 (McDonnell-10) and B747 (Boeing 747)