It could also potentially become an issue if there's a problem with the aircraft's fuel pump system. As the fuel source is located below the engines, the tail-mounted engines cannot make use of gravity to self-feed.
如果飞机的燃油泵系统出现问题,也可能成为问题。由于燃料源位于发动机下方,尾部安装的发动机无法利用重力自行供油。