原文大家都知道了，就先删XD
关于UA这个航线小妹实在有点好奇…
目前已知背景知识：
1.台日间有2011年开放天空协议
2.日美间有2009年 Air Transport Agreement
3. KHH-NRT 使用B738（应该是关岛基地的），这机材基本上不可能飞回SFO本土
但台日间当年签的似乎是“两国间业者”，而美日虽然是双边全面无限制开放天空
真的很想知道，这个航线的航权是基于哪些航约？
算是第五航权还是第七航权呢？
注： 7th freedom of the air
the right or privilege, in respect of scheduled international air services, granted by one State to another State, of transporting traffic between the territory of the granting State and any third State with no requirement to include on such operation any point in the territory of the recipient State, i.e the service need not connect to or be an extension of any service to/from the home State of the carrier.