How many knots before the stall does the natural stall warning occur?

• A. 2 knots
• B. 3 knots
• C. 4 knots
• D. 5 knots

Answer: (B)

The natural stall warning typically activates at a specific margin above the critical angle of attack, which corresponds to a certain airspeed before reaching the stall condition. In this case, the natural stall warning occurs at 3 knots above stall speed. This margin gives pilots adequate time to recognize the impending stall and take corrective action.

Understanding this parameter is crucial for pilots, as it emphasizes the importance of maintaining awareness of airspeed when flying near the stall threshold. Recognizing the warning at 3 knots allows for prompt responses, enhancing safety and performance during flight operations. The specific timing of the warning ensures pilots are not only notified of their approach to stall conditions but also have time to execute recovery procedures effectively.