S-TEC Fifty Five X - AP Display, NAV APR and ALT HOLD Modes Engaged; AP Display, NAV APR and ALT HOLD Modes Engaged, GS Mode Armed; AP Display, NAV APR and GS Modes Engaged

3rd Ed. Sep 30, 06 3-13
S–TEC
Note:
If the approach positions the aircraft slightly above the GS centerline,
then manual engagement of the glideslope mode can be instantly achieved
by pressing the ALT mode selector switch.
Caution:
Manual engagement of the glideslope mode above the GS centerline will
result in the aircraft moving aggressively toward the GS centerline. Do not
manually engage the glideslope mode if GDI needle deflection is greater than
10% above the GS centerline.
The GS annunciation will flash whenever GDI needle deflection exceeds
50%, or the GS Flag is in view. In the latter event, the FAIL annunciation will
also appear.
At the Decision Height (DH), disconnect the autopilot to execute either a
landing or go-around (GA).
A pictorial of this procedure is shown in Fig. 3-20.
Fig. 3-17. AP Display, NAV APR and ALT HOLD Modes Engaged
Fig. 3-18. AP Display, NAV APR and ALT HOLD Modes Engaged, GS Mode Armed
Fig. 3-19. AP Display, NAV APR and GS Modes Engaged