What is the indicated speed for Flaps 45?

What is the indicated speed for Flaps 45?

• A. 160 Knots
• B. 170 Knots
• C. 180 Knots
• D. 190 Knots

Answer: (B)

When flaps are set to 45, you’re at the most extended flap position, which has the lowest speed limit to protect the flap mechanism. The speed you must not exceed with that setting is called VFE (maximum speed with flaps extended). For this aircraft, the published VFE with flaps at 45 degrees is 170 knots indicated airspeed. So the correct choice is 170 knots because it represents the limit you must not exceed when the flaps are fully extended. Speeds below that are still safe and allowed while the flaps remain at 45, but they are not the maximum permitted value. Speeds of 180 or 190 knots would exceed the flap-extended speed limit and could damage the flaps.

When flaps are set to 45, you’re at the most extended flap position, which has the lowest speed limit to protect the flap mechanism. The speed you must not exceed with that setting is called VFE (maximum speed with flaps extended). For this aircraft, the published VFE with flaps at 45 degrees is 170 knots indicated airspeed. So the correct choice is 170 knots because it represents the limit you must not exceed when the flaps are fully extended.

Speeds below that are still safe and allowed while the flaps remain at 45, but they are not the maximum permitted value. Speeds of 180 or 190 knots would exceed the flap-extended speed limit and could damage the flaps.