Flight Controls
Flight Controls is a core knowledge area on the AMT — Airframe FAA written exam. This hub collects our 16 in-depth, ACS-aligned flight controls articles — each written in plain English and grounded in the official FAA handbooks. Work through them below, then drill the topic with practice questions.
Primary Flight Control Surfaces: Ailerons, Elevators, and Rudder
Ailerons, elevators, and the rudder are the three primary flight control surfaces that directly control an aircraft's movement around its three axes of motion — roll, pitch, and yaw.
Secondary Flight Controls: Flaps, Slats, and Spoilers
Secondary flight controls—flaps, slats, and spoilers—modify lift and drag to give pilots precise control over airspeed, descent rate, and landing performance; understanding their mechanics is essential for both AMT certification and safe aircraft maintenance.
Flight Control System Types: Manual, Hydraulic, and Fly-By-Wire
Aircraft flight control systems have evolved from simple manual cable linkages to hydraulic power-assist and fully electronic fly-by-wire architectures, each with distinct maintenance and airworthiness implications for AMTs.
Cable and Pulley Flight Control Systems
Cable and pulley systems transmit pilot control inputs to flight control surfaces through a network of steel cables, pulleys, fairleads, and turnbuckles — understanding their inspection and rigging is essential for airframe AMTs.
Push-Pull Rod and Torque Tube Control Systems
Push-pull rods and torque tubes are rigid mechanical linkages that transfer cockpit control inputs to flight control surfaces with minimal stretch and precise response, making them essential to airframe rigging and inspection.
Control Surface Balancing: Mass Balance and Aerodynamic Balance
Mass balance and aerodynamic balance are engineering techniques used to prevent dangerous control surface flutter and reduce pilot control forces, and every AMT must understand both to perform correct maintenance and inspection.
High-Lift Devices: Types and Operation of Wing Flaps
Wing flaps are high-lift devices that increase camber and/or drag to allow slower, steeper approaches and shorter landings — essential knowledge for every AMT airframe technician.
Leading Edge Slats and Slots: Design and Function
Leading edge slats and slots increase a wing's maximum lift coefficient by energizing slow boundary-layer air, allowing safer flight at higher angles of attack and lower stall speeds.
Trim Systems: Trim Tabs, Servo Tabs, and Anti-Servo Tabs
Trim systems relieve sustained control pressures in flight; understanding trim tabs, servo tabs, and anti-servo tabs is essential for AMT airframe certification and safe aircraft maintenance.
Differential Aileron Systems and Adverse Yaw Correction
Differential aileron systems reduce adverse yaw by deflecting the up-going aileron more than the down-going one, keeping turns coordinated and reducing the need for rudder input.
Spoilers and Speed Brakes: Ground and Flight Spoiler Operation
Spoilers and speed brakes disrupt lift and add drag on command, serving distinct roles in roll control, lift dumping on landing, and airspeed management in flight — critical knowledge for airframe technicians.
Rigging and Adjustment of Flight Control Systems
Proper rigging and adjustment of flight control systems ensures that all control surfaces move through their correct deflection ranges, with proper cable tension and neutral alignment, so the aircraft handles predictably and safely.
Inspection and Maintenance of Flight Control Cables and Turnbuckles
Flight control cables and turnbuckles are safety-critical components requiring precise inspection, tensioning, and locking procedures; this guide covers every step an AMT must know for airframe certification.
Control Surface Travel Limits and Neutral Point Verification
Control surface travel limits and neutral point verification are critical AMT airframe tasks that ensure each movable flight control operates within manufacturer-specified deflection angles and returns precisely to its aerodynamic neutral position, directly affecting aircraft handling and airworthiness.
Flutter Prevention and Control Surface Hinge Moments
Flutter is a dangerous, potentially destructive oscillation of control surfaces caused by aerodynamic forces and structural inertia; understanding hinge moments and mass balance is essential for airframe technicians to prevent it.
Fly-By-Wire Flight Control Systems: Components and Safety Features
Fly-by-wire systems replace mechanical linkages with electronic signals and computers, enabling precise control, envelope protection, and significant weight savings on modern aircraft.
More AMT — Airframe subjects
Articles are original summaries grounded in the public-domain FAA handbooks and cite their source. ACS-aligned study aids — not a substitute for the official handbooks or regulations.