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