S-TEC Fifty Five X, Pilot Operating Handbook

Page: 67 / 78

3-32 3rd Ed. Sep 30, 06
S–TEC
3.4.2 FD Mode
With the Autopilot Master Switch in the FD/AP position, together with a roll mode
(HDG, NAV, NAV APR, REV, REV APR, NAV GPSS) and pitch mode (ALT, VS, GS)
engaged, set the Autopilot Master Switch to the FD position as shown in
Fig. 3-40. An audible alert will sound, the roll servo and pitch servo will
disengage, and the FD annunciation will appear on the Remote Annunciator as
shown in Fig. 3-41, to acknowledge that the FD mode is engaged. The pilot
must steer the aircraft toward the Steering Command Bars, until the ARS is
tucked into them. The FD provides a visual indication of how accurately the pilot
is tracking the autopilot's roll and pitch commands. A typical view of the FD with
the FD mode engaged is shown in Fig. 3-42.
Fig. 3-39. FD Display, FD/AP Mode Engaged
Fig. 3-40. AP Master Switch, FD Mode Engaged
Fig. 3-41. Remote Annunciator Display, FD Mode Engaged