What is the maximum speed for turbulent air penetration?

The maximum speed for turbulent air penetration is set to ensure safety and structural integrity of the aircraft while encountering turbulence. In the context of the CRJ550, this speed is designed to be conservative enough to prevent excessive loads on the airframe and to maintain control during turbulent conditions.

The selected maximum speed of 280 KIAS/.75 Mach is well-established within operational procedures for the CRJ series and reflects a balance between maneuverability and safety. Operating at this speed helps ensure that the aircraft remains within its structural limits, allowing pilots to maintain control while navigating through turbulent air.

The other speed options exceed this turbulence penetration limit, which could potentially lead to structural strain or loss of control in severe turbulence. Therefore, the chosen maximum speed provides a prudent approach to ensuring both safety and compliance with operational guidelines when flying in turbulent conditions.