B747-400
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Aircraft Equipment Problem Critical; Deviation - Speed All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Unstabilized Approach
Flight Crew Overcame Equipment Problem
Aircraft; Human Factors
On approach airspeed was not maintained and the airplane approached a stall because of an autothrottle malfunction. Once this was recognized the approach continued normally.
B747-400 flight crew experienced an autothrottle malfunction and the aircraft approached a stall before they recognized the loss of airspeed and took corrective action.