_MOHAPX_

Example pls. Will the distance be calculated to the object below or to the sea level?

You need telemeter. --add item telemeter to bottom ship --connect telemeter to seat --rename slot in control unit editor to "telemeter" --add to system.update() --Auto extend/retract gear local speed = math.floor(vec3(core.getWorldVelocity()):len() * 3.6) if telemeter.getDistance() < 5 and speed < 10 then if Nav.control.isAnyLandingGearExtended() == 0 then Nav.control.extendLandingGears() end else if Nav.control.isAnyLandingGearExtended() == 1 then Nav.control.retractLandingGears() end end