Rate of climb Altitude Slew. Once Altitude Hold (AH) is engaged in flight the throttle stick function changes to rate of climb. Near center stick, with a dead-band from 40% to 60%, the rate of climb is 0 and the current altitude is maintained. From 40% to 0%, the craft descends at a variable rate proportional to the throttle stick up to -10ft/sec at 0%. From 60% to 100% the craft ascends at a variable rate proportional to the throttle stick up to +10ft/sec at 100%. Returning the stick to the center dead-band causes the craft to maintain current altitude