The failure mode analysis of motion mechanism for airbus A320 flap

Flap plays an important role in the process of the plane flying, once the flap failure may cause serious flight accidents. Based on FMEA of the A320 flap, this article summarizes the main failure modes of motion mechanism for A320 flaps, and analyzes the failure mechanism from the point view of design, tooling, use and maintenance. According to the failure mechanism, some methods of solution have been proposed to avoid the failure mode and reduce the failure rate in use condition, at the same time, which are rational and useful references for aircraft motion mechanism design.