Turbulent Air Penetration Speed is ______.

• A. 260 knots
• B. 280 knots
• C. 300 knots
• D. 320 knots

Answer: (B)

When flying through turbulence, gusts push and yank the airplane, creating loads that can be higher than the aircraft can safely tolerate if you stay at too high a speed. The Turbulent Air Penetration Speed is the speed chosen to minimize those gust-induced loads while still keeping enough airspeed to maintain control and avoid a stall. It’s a balance between reducing dynamic pressure and preserving maneuver margins.

For the P-8A, the published Turbulent Air Penetration Speed is 280 knots. That value is set to give you good gust load reduction across typical weights and configurations, while keeping adequate control effectiveness and stall margin. If conditions or weight require, you’d adjust, but 280 knots is the standard reference to use in turbulence.

This speed is distinct from stall or maneuvering speeds, and serves specifically to manage gust loads in turbulence.