Certified Flight Instructor (CFI) Practice Exam

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Study for the Certified Flight Instructor Test. Explore multiple-choice questions, detailed explanations, and get fully prepared for your CFI exam! Achieve success with your flight instructor exam by understanding key concepts and honing your technical skills.

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Which speed defines the stalling speed at minimum steady flight where the airplane is controllable?

The correct answer is: Vs

The stalling speed at minimum steady flight where the airplane remains controllable is defined as Vs. This speed represents the minimum speed at which the aircraft can maintain controlled flight in level flight without risking a stall. It is crucial for pilots to understand this speed as it is vital for ensuring safe operations during various phases of flight, especially during takeoff and landing. Vs is also important for determining the safe operating margins for pilots, and it assists in decision-making during maneuvers that may approach the stall regime. Recognizing the significance of Vs helps in maintaining awareness of aircraft performance and safety limits. Vx and V1 are related to different aspects of flight performance. Vx is the speed for the best angle of climb, which optimizes altitude gain over distance, while V1 is the decision speed during takeoff, indicating the point beyond which a takeoff should not be aborted. V2 is the takeoff safety speed, which ensures that the aircraft can safely climb with one engine inoperative. These speeds serve specific functions but do not directly measure the stall speed in steady flight.