The Federal Aviation Administration (FAA) has issued a safety directive warning pilots of 787-8 and 787-9 airplanes to avoid abrupt flight-control inputs in the event of sudden, unrealistic drop in indicated airspeed. The FAA also requires 787-8 and 787-9 operators to update the flight manual with the warning message: AIRSPEED DROP In the event of a sudden, unrealistic drop in indicated airspeed, do not apply large, abrupt control column inputs. Fly the airplane with normal pitch and power settings. If manual flight is needed, disconnect the autopilot prior to making manual flight control inputs.
