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US Air Force tackles ageing process

机译：美国空军应对老化过程

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Years of procurement neglect have forced the US Air Force (USAF) to marshal its resources against a progressively invasive threat to its aircraft fleet - the increasing age of structures and systems. Such is its severity, the problem has helped to instil a new culture of awareness and has led to the adoption of innovative solutions to keep ageing aircraft airworthy - an absolute necessity, service officials say, in the absence of quick-fix solutions on the acquisition front. The recent focus on the USAF's fleet of inflight refuelling aircraft has highlighted the problem facing the service. The need to find a replacement for the Boeing 707-based KC-115 tanker is driven heavily by the debilitating age of the fleet; the average aircraft is around 37 years old. According to current analysis, this figure will have increased to an average age of around 50 years by 2020. In the meantime, the aircraft is spending ever longer periods in maintenance. Around one-third of the fleet is undergoing depot supervision at any given time and mission-capable rates have dropped below 70%.
机译：多年以来对采购的忽视，迫使美国空军（USF）调动其资源，以应对对其机队造成的渐进性入侵威胁-结构和系统的寿命日益增加。这样的严重性，这个问题有助于建立新的意识文化，并导致采用创新的解决方案来保持飞机的适航性，这是绝对必要的，服务官员说，在并购时没有快速解决方案面前。最近对美国空军机上加油机机队的关注突显了该服务面临的问题。由于机队衰弱不堪，迫切需要寻找替换基于波音707的KC-115加油机的方法。平均飞机寿命约为37年。根据目前的分析，到2020年，这一数字将平均增加到50年左右。与此同时，飞机的维修时间越来越长。在任何给定时间，约有三分之一的车队正在接受仓库监督，任务执行率已降至70％以下。

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