商用和军用航空细分市场驱动了2020年MRO的大部分需求
据Aviation Week Network最新发布的2020年机群和MRO预测，2020年商用、军用、商务航空和民用直升机的MRO市场总价值将达到1843亿美元。仅商用和军用MRO细分市场就占1658亿美元。不过，预测显示，商用飞机的飞行时长将达到9120万小时，军用飞机的飞行时长仅为990万小时，因此军用飞机的飞行成本要高得多。
The combined 2020 MRO market for commercial, military, business aviation and civil helicopters should be valued at $184.3 billion, according to the Aviation Week Network 2020 Fleet & MRO Forecasts. The commercial and military MRO segments alone represent $165.8 billion. However, the forecasts call for commercial aircraft to generate 91.2 million flight hours and military aircraft to generate only 9.9 million, so the cost per flight hour for military aircraft is much higher.
预计现场维护将占所有军用MRO支出的49%，其次是零部件、机身和发动机。
Expect field maintenance to generate 49% of all military MRO expenditures, followed by components, airframes and engines.
这与商用飞机的混合模式有很大不同，MRO预测显示，发动机维护将占MRO需求的43%，其次是航线维护、部件、改装和机身维护。
This is very different than the mix for commercial aircraft, where the MRO forecast calls for engine maintenance to generate 43% of MRO demand, followed by line maintenance, components, modifications and airframe maintenance.
商用、军用和民用直升机MRO需求预测的一个共同点是地缘特征：对这三类细分市场的MRO贡献最大的地区依次是北美、欧洲和亚太地区。
One thing that the commercial, military and civil helicopter MRO demand forecasts have in common is geography: The top MRO generators for all three will be North America, then Europe, followed by the Asia-Pacific region.
不过，就商务航空而言，排名前三的地区是北美、欧洲和拉丁美洲。2020年，亚太地区对这一细分市场的MRO需求还不到拉丁美洲的一半。
For business aviation, however, the top three regions are North America, Europe and Latin America. Asia-Pacific MRO demand for this segment in 2020 will be less than half of that for Latin America.
根据上述预测，预计到2020年MRO需求最大的机型是波音737-800（商用机）、Lockheed Martin F-35（军用机）、Eurocopter H125/H130（直升机）和Bombardier GlobalExpress（商务机）。
For each of the forecasts, the aircraft expected to generate the most MRO demand in 2020 will be the Boeing 737-800 (commercial), Lockheed Martin F-35 (military), Eurocopter H125/H130 (helicopter) and Bombardier GlobalExpress (business).