Which speed is the lower limit of the green arc on the airspeed indicator?

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Study for the Pilot's Handbook of Aeronautical Knowledge Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Which speed is the lower limit of the green arc on the airspeed indicator?

Explanation:
The green arc on the airspeed indicator represents the normal operating range. Its lower limit is the stall speed in the normal configuration, known as Vs1. This is the minimum speed at which the aircraft can maintain steady, controllable flight during normal operations. Vs0, by contrast, is the stall speed in the landing configuration (flaps and gear down) and isn’t the speed bound for normal flight. VY is the best-rate climb speed, and VNO is the upper limit of the green arc (the maximum structural cruising speed). So the lower limit of the green arc is Vs1.

The green arc on the airspeed indicator represents the normal operating range. Its lower limit is the stall speed in the normal configuration, known as Vs1. This is the minimum speed at which the aircraft can maintain steady, controllable flight during normal operations. Vs0, by contrast, is the stall speed in the landing configuration (flaps and gear down) and isn’t the speed bound for normal flight. VY is the best-rate climb speed, and VNO is the upper limit of the green arc (the maximum structural cruising speed). So the lower limit of the green arc is Vs1.

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