Where are the Leading Edge Extensions (LEX) located?

• A. On the tail near the stabilators.
• B. On either side of the forward fuselage, extending the wing leading edge.
• C. On the trailing edge of the wings.
• D. Under the fuselage.

Answer: (B)

Leading Edge Extensions sit on each side of the forward fuselage and extend the wing’s leading edge forward of the main wing root. Their purpose is to generate a strong vortex over the wing as the aircraft pitches up, which energizes the airflow, helps delay stall, and maintains lift and control at high angles of attack. This arrangement is a hallmark of fighters like the EA-18G Growler, giving better maneuverability and stability during aggressive flight. They are not located on the tail near stabilators, nor on the trailing edge, nor under the fuselage.