Meggitt S-TEC Fifty Five X, Pilot Operating Handbook

Page: 33 / 71

3-4 1st Ed. Jul 15, 06
S–TEC
Fig. 3-3. AP Display, NAV Mode Engaged
Fig. 3-4. PFD Display, NAV Mode Engaged, A/C on 45
°°°°°
Intercept Angle
3.1.2 Navigation (NAV) Mode
Select a VOR frequency on the Navigation Receiver. Set the PFD CRS Pointer to
the desired course on the compass card, and press the NAV mode selector
switch to engage the navigation mode. The NAV annunciation will appear as
shown in Fig. 3-3.
If the Left/Right Needle is at full scale (100%) deflection from center, the
autopilot will establish the aircraft on a 45
°
intercept angle relative to the
selected course. If the Left/Right Needle is less than 100% deflection from
center, the autopilot may still establish an intercept angle of 45
°
, provided the
aircraft's closure rate to the selected course is sufficiently slow. Otherwise, the
intercept angle will be less than 45
°
. A typical view of the PFD during this stage
of the intercept sequence is shown in Fig. 3-4.