During flight well above the flap extension speed, what happens when the flap lever is moved to DOWN?

• A. Flaps extend normally
• B. Flaps do not extend and are hydraulically locked in the up position
• C. Flaps retract fully
• D. Flaps oscillate

Answer: (B)

When the aircraft is flying faster than the flap extension limit, the flap system has a high-speed lockout. This interlock prevents the flaps from moving to the DOWN position to protect the wing from excessive loads. So, when you move the flap lever to DOWN at those speeds, the flaps do not extend and remain hydraulically locked in the up position. If you slow below the limit, the lockout disengages and the flaps can extend normally.