Which statement best describes the relationship of AoA sensors to stall protection?

• A. AoA sensors measure outside temperature.
• B. AoA sensors regulate cabin pressurization.
• C. AoA sensors detect near-stall conditions and trigger stall warning or stick shaker.
• D. AoA sensors control landing gear extension.

Answer: (C)

Angle of attack sensors provide the data that stall protection relies on. They measure how high the wing is pitched relative to the oncoming air, and as the angle approaches the wing’s critical limit, the system recognizes a near-stall condition. It then alerts the crew with a stall warning and can activate the stick shaker to give a tactile cue to recover before a stall develops. This function is specific to detecting angle of attack and protecting against stalls.

What these sensors do not do: outside air temperature is measured by a separate temperature sensor, cabin pressurization is controlled by the environmental control system, and landing gear extension is managed by the gear system and hydraulics.