Commercial Pilot License (CPL) 2025 – 400 Free Practice Questions to Pass the Exam

Fuel quantity in an aircraft is typically measured using a float type fuel quantity transmitter. This system utilizes a float that rises and falls with the fuel level in the tank. As the float moves, it changes the resistance in an electrical circuit, which is then translated into a fuel quantity reading. This method provides an accurate and reliable way to measure the fuel level, allowing pilots to monitor fuel status during flight and ensure safe operations.

The float type transmitter is favored for its simplicity and effectiveness, enabling real-time fuel monitoring. While manual gauges and digital fuel monitoring systems can provide fuel level information, they often rely on similar principles or additional technology that gauges the level rather than directly measuring it in the same manner as a float mechanism. Visual inspection, on the other hand, is not a reliable method for measuring fuel quantity as it does not provide an accurate or consistent measurement, especially in flight. This underscores the importance of using a system like the float type transmitter for precise fuel management.