Originally Posted by
Toejam
The AF C-17 has a turbulence mode that commands the autopilot to hold a pitch and not chase an altitude and the auto-throttles hold their position and do not chase an airspeed. The older Boeing 757/767s do not have this feature. Any bus drivers care to tell of their turbulence features/procedures?
Turbulence damping is provided automatically in Normal Flight Law. The flight computer adds commands to elevator and yaw damper unit to null out structural modes induced by turbulence. Operates when a/c is above 200 kts, autopilot is engaged and aircraft within the normal flight envelope.
There is no TURB button (pitch hold) on an A330 like there was on the 747 and DC-10.