To examine the operational aviation efficiencies in 22 Asian airlines, the airlines were classified into three strategic alliances, and their respective efficiencies assessed using a modified dynamic undesirable meta-frontier data envelopment analysis model. It was found that (1) average aviation industry efficiency declined from 2014 to 2016; (2) the number of airport input variables and the output delay rate factor were important inefficiency indicators; and (3) only the One World strategic alliance had an increasing technology gap ratio, which indicated that aviation efficiency was continuing to improve.

中文翻译：

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联盟和延误率对航空公司业绩的影响

为了检查 22 家亚洲航空公司的运营航空效率，将航空公司分为三个战略联盟，并使用修改后的动态不良元前沿数据包络分析模型评估各自的效率。发现（1）2014-2016年航空业平均效率下降；(2) 机场输入变量数和输出延误率因子是重要的无效率指标；(3) 只有寰宇一家战略联盟的技术差距率有所增加，这表明航空效率正在不断提高。