What HeavyPro does (and why your stick suddenly feels heavy)

Grab the yoke of a parked 777 and it barely moves: tonnes of hydraulics, cables and a feel unit push back. Your desktop joystick has none of that. It has one small spring, so in the sim a 300-tonne jet follows your hand as fast as a paper plane.

HeavyPro gives that weight back. It sits between your stick and Microsoft Flight Simulator 2024 and decides how quickly the aircraft's controls follow your hand: with weight, momentum and a damped return, instead of an instant snap.

How you feel weight on a stick that cannot push back

Your stick cannot get stiffer, so HeavyPro turns weight into time. Pull back on a heavy jet and the elevator follows you smoothly over a moment; let go and it settles back without bouncing. Full deflection still arrives: you never lose authority, you just stop over-controlling.

Every aircraft has its own control system

Real aircraft don't all feel the same, and HeavyPro doesn't fake it with one setting:

• Boeing yokes and other artificial-feel aircraft (737, 747, 757, 767, 777, 787, A300/A310, E-Jets): a feel unit fed by airspeed makes the column heavier as speed builds. HeavyPro does the same: light while you taxi, heavy at cruise.
• Airbus sidesticks (A320 family, A330, A340, A350, A380, A220): the stick has the same spring at every speed and commands a rate, so HeavyPro shapes it only lightly and never scales it with airspeed. That keeps you out of pilot-induced oscillation.
• Mechanical controls (light aircraft, most turboprops and bizjets): the force grows with the square of speed, and HeavyPro stiffens them on a light-aircraft scale.
• Gliders get a feel of their own: quick, light pitch and a slow, precise big-wing roll. See Gliders.

What HeavyPro never touches

HeavyPro only shapes your stick input. It does not change any aircraft file, flight model or aerodynamic force (the optional PMDG 777 Real 777 feel is the one exception, and it makes a separate copy). Turn HeavyPro off and your aircraft are exactly as they were.

Tip: the fastest way to understand it is to try it. Take a heavy jet off with HeavyPro on, then fly the same circuit with it off. Most pilots never go back.