Airworthiness Directives; The Boeing Company Airplanes

FAA / Federal Register · 2019-08536

We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 787 series airplanes. This AD was prompted by reports of hydraulic leakage caused by damage to aileron and elevator actuators from lightning strikes. This AD requires an inspection or records check to inspect for certain parts, detailed inspections of aileron and elevator power control units (PCUs), and applicable on- condition actions. We are issuing this AD to address the unsafe condition on these products.