What does the Airbus A320 yaw damper do in a simulator?

Yes. The Airbus A320 has an automatic yaw-damping function commanded by its Flight Augmentation Computers (FACs). It applies small rudder inputs to suppress Dutch-roll oscillation and improve directional stability. In a flight simulator, a well-modelled A320 performs this in the background; the pilot normally does not switch a separate yaw damper on.

What does the A320 yaw damper actually do?

The yaw damper opposes unwanted oscillatory yaw; it does not hold a selected heading. Dutch roll is a coupled yaw-and-roll motion that can make the tail appear to swing from side to side, especially after turbulence, a control disturbance or an asymmetric change in thrust.

The FACs use aircraft-motion data to command small, opposing rudder deflections through the yaw-damper system. The A320 also has automatic turn coordination, which helps minimise sideslip during normal turns. Turn coordination and yaw damping are related automatic rudder functions, but they are not the same task.

The system operates independently of the autopilot, so disconnecting the autopilot does not normally disable yaw damping. For the relationship between the FACs, pedals, sidesticks and cockpit indications, see our sim-oriented explanation of the A320’s controls and displays.

Do you have to switch the A320 yaw damper on?

No separate yaw-damper switch is used during normal A320 operation. The overhead-panel FAC pushbuttons are normally left on, allowing the associated automatic flight-control functions to operate when the required electrical, hydraulic and computer systems are available.

A detailed aircraft add-on may simulate FAC failures, redundancy and related ECAM indications. A simpler A320 may represent yaw damping only through its basic flight model, even if the FAC buttons are visible in the cockpit. Our practical A320 flying guidance for Microsoft Flight Simulator explains why simplified and high-fidelity aircraft can behave differently.

Automatic yaw-damper commands do not provide a useful pedal-motion cue. Home simulator pedals are not normally back-driven, and some virtual cockpits do not animate every small rudder command.

Can the yaw damper replace rudder-pedal input?

No; automatic yaw damping is not a substitute for deliberate pilot rudder input. It deals mainly with oscillatory motion and normal coordination, not every situation requiring directional control.

• Taxi and the take-off roll: use the appropriate nosewheel-steering and rudder controls to remain on the centreline. The yaw damper is not a runway steering system.
• Crosswind landing: the pilot may still need rudder during the de-crab and touchdown.
• Engine failure: sustained asymmetric thrust requires pilot rudder input and, where appropriate, rudder trim. The yaw damper cannot cancel the whole asymmetric force.
• Normal airborne turns: substantial pedal input is usually unnecessary because the aircraft provides automatic turn coordination.

How can you tell whether it is working in a simulator?

At a safe altitude, a small rudder pulse should settle promptly after the rudder is released rather than developing into repeated alternating yaw and roll.

1. Establish a clean test: use normal simulation speed, calm weather, a stable configuration and plenty of height.
2. Apply a modest input: make a brief, small rudder input, centre the pedals and avoid large or abrupt control movements.
3. Watch the indications: observe the slip/skid indication and bank response on the PFD. Our guide to reading the A320 PFD identifies the relevant flight and guidance cues.
4. Assess the recovery: the disturbance should decay without prolonged fishtailing. Small automatic rudder movement may be visible externally, but its absence is not proof that damping is missing.

A stable recovery alone does not prove that detailed FAC logic is being simulated; the aircraft model’s natural aerodynamic stability can produce a similar result. The strongest evidence in a high-fidelity model is correct behaviour during supported FAC failure scenarios, together with the appropriate system indications.

Why does an A320 still yaw or fishtail in a flight simulator?

Sustained or repeated yaw usually points to weather, control configuration, system state or flight-model limitations rather than normal yaw-damper operation.

1. Check duplicate axes: remove overlapping rudder assignments from joystick twist grips, pedals, controllers and keyboards. A noisy axis may need calibration or a small dead zone.
2. Check assistance settings: automatic rudder or coordinated-turn assistance can conflict with an aircraft add-on’s own Airbus control laws.
3. Separate ground and airborne symptoms: yaw confined to taxi or the take-off roll is more likely to involve crosswind, nosewheel steering, differential braking or pedal calibration.
4. Return to normal simulation speed: time acceleration can cause some simulated control loops to overshoot or oscillate.
5. Verify the aircraft state: in a detailed A320, check that the FACs and supporting systems are available. If ECAM declares a fault, use the displayed procedure rather than cycling switches at random; our explanation of how to interpret A320 ECAM information covers that workflow.

A gentle yaw response in turbulence is normal because a yaw damper reduces motion rather than making the aircraft rigid. Large, regular side-to-side swings in calm air are not normal and should prompt checks for conflicting inputs, assistance features or an incompletely modelled flight-control system.