Words for: Aircraft Systems
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The physical parts inside the airplane that carry the pilot's hand and foot movements out to the moving surfaces on the wings and tail.
The mechanical components that connect the pilot's cockpit controls (yoke or stick, rudder pedals) to the movable control surfaces on the airframe. Linkages typically include push-pull rods, cables, pulleys, bellcranks, and torque tubes that transmit the pilot's input to the ailerons, elevator, and .
Seen in discussions of primary flight controls, preflight control checks, and how the pilot’s control movement reaches the elevator, ailerons, and rudder.
Linkage' comes from 'link' -- something that joins two things together. The flight control linkages are literally the chain of parts linking the pilot's hands and feet to the surfaces that steer the aircraft.
Clear understanding shows where control inputs travel and highlights possible mechanical failure points that affect handling.
Like the brake and gear cables on a bicycle: when you squeeze the lever, a cable runs through the frame and pulls the brake pad onto the wheel. Flight control linkages do the same job between the cockpit and the control surfaces.
Do not think of a linkage as an electrical or radio connection. Here, it means a physical mechanical connection that transfers motion from the cockpit controls to a moving part of the airplane.
During preflight, the pilot moved the yoke fully left and right to confirm the flight control linkages were operating freely and the ailerons responded in the correct direction.
During inspection the mechanic checked the flight control linkages for any looseness or corrosion.