At what angle of attack does the shaker activate on the AOA gauge?

• A. 0.7 AOA
• B. 0.8 AOA
• C. 0.9 AOA
• D. 1.0 AOA

Answer: (B)

The shaker is a tactile warning tied to the angle of attack sensor to alert you before you reach stall. It’s meant to give you a timely, unmissable cue to reduce AOA and recover, regardless of airspeed. The activation at 0.8 AOA is chosen because it’s high enough to avoid nuisance alerts in normal flying but well below the stall margin, giving a comfortable buffer to adjust pitch or power. If it fired at 0.7 AOA, you’d get alerts too easily in gusts or aggressive climbs; if it waited until 0.9 or 1.0 AOA, you’d have less time to respond as you approach stall. So 0.8 AOA provides the best balance between early warning and avoiding false alarms.