CPL Aerodynamics · Practice

During a high-AoA approach, the pilot sees the VSI showing an unexpectedly high sink rate despite maintaining approach speed. The likely cause related to pressure distribution is:

• A.ground effect is reducing lift as the aircraft approaches the threshold
• B.the high suction peak is pulling the aircraft toward the runway
• C.operating on the back side of the drag curve
• D.the pressure distribution at high AoA creates a large nose-down moment that requires back elevator, which reduces lift