From my notes,
Please see the difference between a FD in normal toga mode and one in enhanced WS recovery mode.
They may be displayed the same way,unlike for example an RA guidance but the system behind is different.
The sim may not display the difference or simply the system was out of the WS,FD go back to standard mode and alt acq mcp altitude.
The Flight Director was chosen as the guidance system because it is simple, displayed on the ADI, and pilots use it on a routine basis. The windshear recovery enhancement flight director will provide proper flight, path guidance only when operating in the TOGA pitch mode (i.e., with TOGA annunciated). The control inputs for the guidance come from vertical speed, airspeed and angle of attack. When using the windshear recovery enhanced flight guidance system, the command guidance control laws are:
• V/S Greater than 1200 fpm - The F/D will maintain a minimum of cursor speed.
• V/S Less than 1200 fpm and Down to 600 fpm - As the V/S decreases, the F/D command will slowly adjust from speed control to pitch control so that at 600 FPM the F/D will command 15 degrees pitch and disregard airspeed.V/S 600 fpm Down to 0 fpm - The F/D will slowly adjust from 15° pitch toward optimum pitch (the angle of attack for stick shaker minus 2 degrees).
• V/S Less than 0 fpm - The F/D will maintain the angle of attack for stick shaker minus 2 degrees.
• When the aircraft departs the windshear environment, the flight director will smoothly transition back to the normal takeoff or go-around mode.