Landing gear supplementary sub-systems

Nose landing gear retraction actuator

Nose landing gear retraction actuator

Landing gear supplementary sub-systems fulfill functions such as nose wheel steering, aircraft braking, landing gear door actuation, position and warning.

Landing gear sub-systems

  • The steering sub-system allows steering the aircraft when taxiing.
  • The braking sub-system allows reducing the aircraft speed upon landing.
  • The landing gear door actuation sub-system allows to close the landing gear bay doors once the aircraft is in the air and to open them when the aircraft is about to land.
  • The position and warning system is used to control the sequences of the landing gears legs extension and retraction.

Landing gear in-house capabilities

Nose wheel steering control

Nose wheel steering control

Liebherr has the complete capability to design and manufacture in-house the structural, hydraulic and mechanical parts of such sub-systems (actuators, manifolds, reservoirs, valves, up-locks), to subcontract the other parts (wheels and brakes, brake control, sensors) from specialized suppliers, and to integrate all those parts together with the electronic hardware and software controls made by Liebherr.



Liebherr-Aerospace Lindenberg GmbH

Pfänderstraße 50-52

88161 Lindenberg/Allgäu


  • Phone+49 8381 46-0
  • Fax+49 8381 46-4377

Case studies

Learn about aircraft programs that feature Liebherr landing gear systems.