How many fuel probes are installed in each wing?

• A. Six
• B. Four
• C. Eight
• D. Two

Answer: (A)

The main idea here is how fuel quantity is measured across a wing using multiple sensing points. To get an accurate and reliable reading, the system uses several probes positioned throughout the wing tanks. In a typical setup, there are two tanks in a wing, and each tank has three probes. That creates six probes in a wing in total. Having probes distributed across the tank sections lets the gauge average the readings and reduces the impact of fuel slosh or a single probe fault, so the displayed fuel level stays trustworthy even if one probe isn’t showing perfectly. If there were fewer probes, you’d have less coverage and redundancy; more probes would go beyond what’s standard for this arrangement. So six probes per wing is the configuration that provides robust, accurate sensing in this common wing-tank setup.