How many components are there in the accessory gearbox?

The accessory gearbox is a vital component in aircraft engines, housing various critical mechanisms that support engine operations. The correct answer highlights that there are six components within the accessory gearbox, specifically made up of three pumps, two electrical generators, and one air turbine starter.

Each of these components plays a distinct role: the pumps circulate oil and maintain pressure for lubrication and cooling, the electrical generators provide electrical power to various systems, and the air turbine starter is responsible for initiating engine start-up procedures. This combination of components ensures that the engine operates efficiently and reliably, enhancing overall flight safety and performance.

Other options suggest fewer components, which would not account for the comprehensive functions required in the accessory gearbox. This answer emphasizes the necessity for all six components to achieve the proper operational capabilities of the aircraft engine system. Understanding the correct configuration and function of these parts is essential for effective performance and maintenance within aviation contexts.