How do I disable alpha floor in the A320 to land?

Most Airbus pilots should never see Alpha Floor and it would probably scare the bejunks out of the passengers. If that happens, the process to restore the autothrust to normal operation is to fly it like a Missed Approach; match the thrust lever position. Then turn off the autothrust either with the red instinctive button on the thrust levers or by the button on the glareshield. After ensuring you are at a safe speed and deck angle pull the thrust lever back and fly manually while you restore autothrust in this order SAFAA

Speed - in the speed window

Altitude - in the Altitude window as well as any vertical mode - pulling for Vertical Speed 0 works

Flight Directors - ON and pointing the jet where you want to go

Autothrust - back on - put the thrust levers back in the notch

Autopilot - ON

... then start apologizing profusely to everyone who saw what you did, write an ASAP report and consider whether you need to start filling out job applications for other airlines 🙂

It has happened in the real world. More often than not the cause is turbulence plus an unstable glideslope. Sometimes if you have a fast descent rate going, a lot of drag, plus the airplane senses itself going below glideslope, the airplane will over react and pitch up quite rapidly, instantaneously hitting the angle of attack needed to trigger Alpha Floor. Windshear could also get you in Alpha Floor, in which case the Windshear profile and the Alpha Floor recovery profile are nearly identical.

Edited August 25, 20205 yr by Proflig8tor