
1) Aircraft undercarriage
Found on
https://www.crosswordclues.com/clue/autobrake

An autobrake is a type of automatic wheel-based hydraulic brake system for advanced airplanes. The autobrake is normally enabled during takeoff and landing procedures, when the aircraft`s longitudinal deceleration system can be handled by the automated systems of the aircraft itself in order to keep the pilot free to perform other tasks. ==Landin....
Found on
http://en.wikipedia.org/wiki/Autobrake
No exact match found.