Hydraulic System Explained: Powering Critical Aircraft Operations The Hydraulic System is one of the most powerful and reliable systems used in modern aircraft. It uses pressurized fluid to transmit force, allowing pilots to control heavy components with minimal physical effort. Without hydraulics, operating systems such as landing gear, brakes, and flight controls would be extremely difficult or impossible. Hydraulic system used for landing gear, brakes and flight control movement Because of its critical role in flight safety, the hydraulic system is designed with redundancy and requires regular inspection and maintenance. What Is an Aircraft Hydraulic System? An aircraft hydraulic system uses incompressible fluid under pressure to create, control, and transmit power. The system converts mechanical energy into hydraulic pressure and then back into mechanical force at the point of use. Hydraulic systems are commonly covered under ATA Chapter 29 in aircraft maintena...