What is meant by flap twisting?

Flap twisting refers to the unequal movement of flap screws. This phenomenon can occur when there is a discrepancy in the operation of the flap mechanism, leading to uneven adjustments of the flaps. Properly functioning flaps should move uniformly to ensure that the aerodynamic performance of the aircraft is as intended. If the screws that control the flaps do not move in unison, it can result in improper flap settings, which affects lift, drag, and overall aircraft control during various phases of flight. Understanding flap twisting is crucial for maintaining the safety and performance of the aircraft during operations.