Smiths Industries Fuel System Test Set QC115A

A Smiths Industries Fuel System Test Set is a piece of aviation ground support equipment (GSE) used to test and calibrate an aircraft's fuel quantity measurement system.

This type of test set is critical for aircraft maintenance to ensure the fuel gauges and sensors are accurate and reliable

It can simulate various fuel levels within the tanks to verify the accuracy of the fuel sensors and gauges.

The set is used to troubleshoot and test various components of the fuel system, including sensors (or "probes"), wiring, and indicators.

 It works by measuring the capacitance of the fuel probes, a key indicator of fuel quantity in capacitive fuel systems. It can also detect issues such as contaminated fuel probes.

It can pinpoint specific problems, such as wiring issues, insulation resistance failures, or intermittent faults.