Airspeed Normal Operating Range (Green Arc) is which of the following ranges?

Airspeed Normal Operating Range (Green Arc) is which of the following ranges?

• A. 40-111 knots
• B. 36-110 knots
• C. 45-120 knots
• D. 50-110 knots

Answer: (A)

The Green Arc shows the normal operating speed range where the airplane can be flown safely in smooth air. It runs from the stall speed in a clean configuration (the lowest safe speed at which you can fly without stalling) up to the maximum structural cruising speed (the highest speed you can fly without risking structural damage). For this aircraft, that range is about 40 knots up to about 111 knots, so the Green Arc is 40–111 knots. The other ranges don’t fit this envelope because they either start below stall speed, or extend beyond the aircraft’s safe structural limit, which would violate normal operating limits.

The Green Arc shows the normal operating speed range where the airplane can be flown safely in smooth air. It runs from the stall speed in a clean configuration (the lowest safe speed at which you can fly without stalling) up to the maximum structural cruising speed (the highest speed you can fly without risking structural damage). For this aircraft, that range is about 40 knots up to about 111 knots, so the Green Arc is 40–111 knots. The other ranges don’t fit this envelope because they either start below stall speed, or extend beyond the aircraft’s safe structural limit, which would violate normal operating limits.