The crew switched to vertical speed mode which reduced the pitch by about one degree however the alpha floor protection activated automatically applying toga.
A320 alpha floor recovery.
A floor can be activated by the aircraft even when auto throttle is disengaged.
Most airbus pilots should never see alpha floor and it would probably scare the bejunks out of the passengers.
The amber and black strip rises to the actual speed of the aircraft.
Alpha floor is also triggered if the pilot applies a large aft stick input while either pitch attitude or angle of attack protection is active.
The amber boxed a floor annunciation is displayed when the speed is between alpha max and alpha protection and the auto thrust system commands to ga thrust regardless of thrust lever position.
The best thing i would say the only thing as well as airbus industrie would say to do should you have an alpha floor situation triggered off.
Match the thrust lever position.
The pfd shows that alpha protection is active in the same way as at low speed and low level.
If that happens the process to restore the autothrust to normal operation is to fly it like a missed approach.
A floor is an auto throttle mode only and when activated provides toga equivalent thrust to the engines.
Alpha floor a floor is the low speed protection system so for it to engage the airspeed must be dangerously low.
Vueling a320 at birmingham on aug 26th 2019 alpha floor on second missed approach.
The captain reduced the thrust levers to prevent the aircraft exceeding flap speed.
The a floor engaged mode changes to toga lk when a floor conditions no longer exist.
Would be to decrease the angle of attack alpha as much as possible and once the toga lock is displayed on the ecam to disconnect the alpha floor as per procedure.
The aircraft can also enter alpha protection at high altitude where it protects the aircraft from the buffet boundary.
V alpha prot and v alpha max are removed they are replaced by a red and black barber pole the top indicating the stall warning speed v sw a nose up command is introduced any time the airplane exceeds v mo m mo to keep the speed from increasing further which can be overridden by the sidestick.
The α floor function is not available below 100 feet ra or.
