Section 3 In-Flight Procedures
2nd Ed Aug 2019
S-TEC 3100 Digital and Analog
3-8
NOTE:
When interfaced to a DG, there is no course pointer input to the 3100.
Set the DG selected heading to the required course value.
3.7.3.1.
Tracking a VOR (NAV)
1)
Select VOR frequency on navigator.
2) Set course pointer to the desired course radial (for DG only
installations, set heading to desired course value).
3) Select course intercept method:
a)
Straight-In
: Press
. Aircraft
intercepts the selected radial at a
45° angle; OR
b)
Pilot Selectable Angle
: Set
heading bug to desired intercept
heading. Press
to engage
HDG. Press
to arm NAV.
4) If armed, NAV automatically engages
at the course capture point.
5) Once captured, the 3100 establishes the crosswind correction angle
and tracks the course.
NOTE:
Once tracking, if CDI needle deflection exceeds 50% from center for a
period of 15 seconds,
NAV
flashes. If the aircraft subsequently returns
to within 50% CDI needle deflection from center,
NAV
stops flashing.
NOTE:
At point of station passage, the 3100 recognizes the condition and holds
the last known course. Either allow the aircraft to pass over the station
and pick it up again on the other side or select another VOR to track.
