Stalling on the Boeing 737 ✈️ An aerodynamic stall occurs when the angle of the wing relative to the oncoming airflow (angle of attack) is so great, that the air can no longer flow smoothly over the surface of the wing. When this happens, the airflow over the top surface of the wing becomes turbulent, the lift is significantly reduced and the wing is now stalled. The pitch attitude at which this occurs is dependent on a number of factors and is displayed on the attitude indicators by the PLI - the Pitch Limit Indicator, or the “eyebrows” as they’re affectionately known! As the aircraft’s attitude increases, a number of alerts are provided. 1) The PLI’s will pop up if the flaps are not extended. 2) “Buffet alert” will show on the FMC display, 3) “Airspeed low” will be automatically announced and the airspeed box will flash yellow. 4) Lastly the stick shaker will activate. Normally, the crew would recover at the first indication. The Stick shaker is the last line of defence against an impending stall and is a real attention getter! As soon as the pilots hear and feel the stick shaker, they will immediately initiate the stall recovery manoeuvre. The most important element of the stall recovery is applying nose down elevator input to reduce the angle of attack below the critical angle of attack (stick shaker stops and below the PLI’s) This will allow the air to flow smoothly over the wing again and lift is restored. We can then roll in the shortest direction to wings level, add thrust as needed and stow the speed brake. As we approach a safe airspeed and attitude, we can return to the desired flight path and re-engage the automatics. Stalls are practiced during the Type Rating and recurrent training to ensure that crews are current on the recovery process. This was filmed in the fantastic sim @va.airlinetraining - go check them out for all your APS MCC and sim hire needs 👌✈️ #stalling #stallrecovery #pilottraining #flighttraining #flightsafety - @airlinepilotperformance