What is Vfe 3?

What is Vfe 3?

• A. 200 knots
• B. 165 knots
• C. 215 knots
• D. 180 knots

Answer: (A)

Vfe is the maximum speed at which you may fly with the flaps in a given extended position. Each flap setting has its own Vfe because extending the flaps changes the wing’s lift and drag and places different loads on the flap system. For the ERJ 175, when the flaps are set to position 3, the published limit is 200 knots. Exceeding this speed with flaps in that position could overstress the flaps or degrade handling and stall characteristics, so 200 knots is the safe, approved limit for that configuration. The other speeds would correspond to other flap positions or configurations and are not the Vfe for flap 3.

Vfe is the maximum speed at which you may fly with the flaps in a given extended position. Each flap setting has its own Vfe because extending the flaps changes the wing’s lift and drag and places different loads on the flap system. For the ERJ 175, when the flaps are set to position 3, the published limit is 200 knots. Exceeding this speed with flaps in that position could overstress the flaps or degrade handling and stall characteristics, so 200 knots is the safe, approved limit for that configuration. The other speeds would correspond to other flap positions or configurations and are not the Vfe for flap 3.