Here are a few examples of maximum demonstrated crosswind components for various aircraft, assuming a dry runway:Įxceeding "Maximum Demonstrated Crosswind" In addition to the 0.2 Vso limitation, "The airplane must be satisfactorily controllable in power-off landings at normal landing speed, without using brakes or engine power to maintain a straight path until the speed has decreased to at least 50 percent of the speed at touchdown." (FAA)įinally, every airplane certificated after May 3rd, 1962 is required to have a "demonstrated crosswind velocity" placard inside the airplane. Keep in mind, manufacturers can test aircraft at crosswind velocities higher than 0.2 Vso (and they often do), but that's the minimum speed. That's a windspeed equal to at least 20% of the power-off landing configuration stalling speed. The test pilot must be able to control the airplane in 90-degree crosswinds not less than a velocity equal to 0.2 Vso, or the stalling speed of the aircraft in a landing configuration. One of those requirements is a demonstration of crosswind controllability, and more specifically, how the aerodynamics of the airplane allows pilots "with no exceptional skill or alertness" to safely take off and land in crosswind conditions. FAA FAA Type Certification Requirements: Maximum Demonstrated CrosswindĮvery airplane type certificated by the FAA must first be flight tested to meet hundreds of airworthiness requirements.
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