Lower limit of the Green Arc is what airspeed?

Lower limit of the Green Arc is what airspeed?

• A. 40 knots
• B. 35 knots
• C. 45 knots
• D. 50 knots

Answer: (A)

The lower limit of the Green Arc corresponds to the stall speed in the clean configuration (no flaps, gear up), known as Vs1. This is the minimum speed at which the aircraft can sustain steady, level flight in normal operating conditions. For this airplane, Vs1 is 40 knots, so the Green Arc starts at 40 knots. The Green Arc then extends up to the maximum structural cruising speed, Vno. Other numeric options don’t define the start of the normal operating range because they aren’t the clean-configuration stall speed for this aircraft.

The lower limit of the Green Arc corresponds to the stall speed in the clean configuration (no flaps, gear up), known as Vs1. This is the minimum speed at which the aircraft can sustain steady, level flight in normal operating conditions. For this airplane, Vs1 is 40 knots, so the Green Arc starts at 40 knots. The Green Arc then extends up to the maximum structural cruising speed, Vno. Other numeric options don’t define the start of the normal operating range because they aren’t the clean-configuration stall speed for this aircraft.