EASA AD US-2019-08-05
Hydraulic Power - Hydraulic Tubing / Check Valve / Flight Control Software - Installation
Federal Aviation Administration Airworthiness Directive 2019-08-05 is a final rule addressing certain Boeing 787-8 and 787-9 airplanes. It mandates the installation of hydraulic tubing, a pressure-operated check valve, and updated flight control software to mitigate risks associated with damage in tire/wheel threat zones. This directive aims to prevent loss of braking on one main landing gear truck, loss of nose wheel steering, and loss of directional control on the ground at low speeds.