15
The autopilot will flash
HDG
for 5 seconds to remind
the pilot to reset the HDG bug to the OBS (or desired
for a LOC) course. Check the heading displayed on the
DG against the magnetic compass and reset if
necessary.
4. Heading Selector Knob - ROTATE BUG to agree
with desired approach course for a LOC, or OBS
course for a VOR/GPS.
When
HDG
stops flashing, if CDI needle is to the left,
aircraft will turn to an intercept course 45º to the left of
selected (Heading Bug) course; and 45º to the right is
CDI needle is to the right.
5. If the Course Deviation Bar is greater than 2 to 3
dots the autopilot will annunciate APR ARM; when the
computed capture point is reached the ARM
annunciator will go out and the selected course will be
automatically captured and tracked. If the D-Bar is less
than 2 to 3 dots: the HDG mode will disengage upon
selecting APR mode; the APR annunciator will
illuminate and the capture/track sequence will
automatically begin.
VOR/LOC/GPS capture:
The autopilot captured the LOC/VOR/GPS.
6. Press APR button again and the autopilot will return
to the ROL mode.
ILS capture:
After capturing the localizer the autopilot will
annunciate
GS
ARM
and
the
glideslope
is
automatically armed.
