In which part of the transmission system are variable capacitance fuel quantity probes located?

• A. Upper case
• B. Lower case
• C. Main transmission
• D. Accessory gearbox

Answer: (A)

Variable capacitance fuel quantity probes are typically located in the upper case of the transmission system. This is important because the upper case section is designed to accommodate various components that monitor and interact with fluid levels, including fuel. The structure and positioning of these probes within the upper case ensure they can effectively measure the fuel quantity while maintaining the integrity of the transmission's operation.

In the context of the transmission system, the other sections may not provide the same accessibility or the necessary environmental conditions for accurate fuel measurement. The main transmission primarily houses gears and mechanical components, while the accessory gearbox is focused on transmitting power to accessories rather than monitoring fuel. The lower case typically contains other mechanical components and does not play a role in fuel quantity measurement. Thus, the upper case is the correct and logical location for these probes.