As the fuel leaves the second stage fuel pump, it passes through another filter where a portion of the fuel is ported to a servo fuel heater before entering the MEC.

• 当燃油离开燃油泵第二级,流到另一个油滤，在那里，一部份燃油在进入主发动机控制器前前转到一个伺服燃油加热器。