What is the only component mounted on the forward end of the AGB?

The air/oil separator is specifically designed to separate air from oil within the accessory gearbox (AGB) of a gas turbine engine. Positioned at the forward end of the AGB, it plays a crucial role in maintaining proper lubrication and functionality of components within the gearbox. The separation process ensures that only oil is circulated to lubricate the parts that require it, while air is vented away, preventing potential aeration of the lubrication system which can lead to reduced efficiency.

The fuel pump, compressor case, and turbine governor serve different functions and are located elsewhere in the gas turbine system. The fuel pump is responsible for supplying fuel to the combustion chamber, the compressor case houses the compressor blades and mechanisms, and the turbine governor regulates the speed and power output of the turbine. Each of these components is vital to the operation of the gas turbine but does not occupy the forward position of the AGB, resulting in the air/oil separator being the only component mounted there.