Alternate Law Alpha Floor

In alternate law vmo is reduced to 320kt and alpha floor is inhibited.

Alternate law alpha floor. V alpha prot and v alpha max are removed. What happens to high speed vmo mmo when you are in alternate law. Aoa is still monitored but warnings relate now to stall speed rather than aoa. High aoa vls alpha floor and high speed.

V ls remains displayed. Protections load factor and pitch attitude. In alternate law when the landing gear is extended the flight control system reconfigures to direct law. Pitch alternate the pitch alternate law provides load factor demand mode load factor limitation high speed stability low speed stability protections and load alleviation function on some a320s.

Extending the landing gear will place the aircraft in direct law. Refer low speed stability. The pfd airspeed scale is modified. Alpha floor protection is inhibited in some cases.

The airplane can be stalled in alternate law. If the aircraft is operated outside the normal flight envelope the pilot must take appropriate corrective action to avoid losing control and or to avoid high speed excursions since the normal law protection features may not. Refer to fctm operational philosophy alternate law. Which of the following statements is always true when operating in alternate law.

Flight control mode or flight control law both refer to the computer software that transforms the movement of the joystick made by an aircraft pilot into movements of the aircraft control surfaces the control surface movements depend on which of several modes the flight computer is in. To ga thrust is provided regardless of thrust lever position. Thanks again for your comments. The alpha floor function is inoperative.

When in alternate law all protections except protection will be lost. An audio stall warning consisting of crickets and a stall aural message is activated. During landing alternate law reverts to direct law at 100 ft ra. Alternate law 113 9 a 9 9 9 14 9 915 9 alternate law 216 9 a 17 918 919 9 degraded 20 degraded 21 direct law22 a 23 924 925 degraded mech backup26 no protections available a alpha floor is lost.

Normal law alpha floor the va floor function which normally occurs at a predetermined angle of attack between alpha protection and alpha max engages the auto thrust system. On airbus a318 mmo setting is also reduced to m 0 77 q 77. Each of the three laws has different sub modes inclusive of ground mode flight mode and flare mode. Vmo is reduced to 320 kt and mmo does not change.

Roll direct roll direct law is a.