TM 55-1510-220-10
2.
Heading switch (autopilot mode selector
control panel) Press. Observe HDG
annunciator
light
illuminates
(autopilot/flight
director
annunciator
panel).
3.
Course knob (pilot's HSI) Set new course
in COURSE window.
4.
Navigation switch (autopilot mode select
control panel, fig. 3-20) Press. Observe
that NAV ARM annunciator illuminates
(autopilot/flight
director
annunciator
panel).
5.
Navigation
capture
annunciator
light
(autopilot/flight
director
annunciator
panel) Monitor. Illumination means
capture of new radial.
o.
Automatic Approach, Front Course.
NOTE
The localizer and glideslope are
captured automatically on the ILS
front course approach. The localizer
must be captured before glideslope
capture can occur. The localizer is
always captured from a selected
heading, but the glideslope may be
captured from any of the vertical
modes
and
from
above
(not
recommended) the glideslope.
1.
VOR receiver Tune appropriate
localizer
frequency.
2.
Course knob (pilot's HSI) Set inbound
localizer course in COURSE window.
3.
Heading knob (pilot's HSI) Set heading
marker to desired intercept angle.
4.
Heading selector switch (autopilot
mode selector control panel, fig. 3-20)
Press. Observe HDG illuminates on
autopilot/ flight director annunciator
panel.
5.
Vertical mode (autopilot mode selector
control panel, fig. 3-20) Select IAS or
ALT.
6.
Approach switch (autopilot mode selector
control panel) Press.
Observe
that
NAV ARM light
illuminates
on
autopilot/flight director
annunciator
panel. If the localizer will
be captured with
the aircraft above the
glideslope,
then
NAV mode should be
used
until
the
aircraft descends to the
glideslope.
7.
Navigation
capture
annunciator
light
(autopilot/flight
director
annunciator
panel) Monitor. Illumination indicates
capture of localizer course.
8.
Glideslope
arm
annunciator
light
(autopilot/flight
director
annunciator
panel) Monitor. Illumination indicates
that autopilot is armed for glideslope
capture.
9.
Glideslope capture light (autopilot/ flight
director
annunciator
panel)
Monitor.
Illumination confirms glideslope capture
and that all vertical modes are cleared.
p.
Go-Around. If visual contact with runway
environment has not been made at decision height, go-around
mode may be activated by pressing the GA button on the left
power lever, and may be initiated from any lateral mode
(HDG, NAV, APPR, B/C) with the following results:
(1)
Illumination of GA annunciator light on
autopilot/flight director annunciator panel.
(2)
Autopilot disengagement.
(3)
Pilot's FDI shows command presentation for
wings level and 70 nose up climb attitude.
NOTE
The heading marker may be preset to
go-around heading after the localizer
is captured; After go-around airspeed
and power settings are established,
selection of the HDG mode will clear
the go-around mode. Pitch attitude
will remain at that used for go-around
until changed with the PITCH SYNC
& CWS button or by selection of a
vertical mode.
q.
Back Course Approach. As in front course
approach, the localizer is captured automatically. The
aircraft should be maneuvered into the approach area by
setting the heading marker and functioning in the HDG
mode.
1.
VOR receiver (VOR control panel)
Tune localizer frequency.
2.
Course knob (pilot's HSI) Set front
course localizer heading in COURSE
window.
3.
Heading knob (pilot's HSI) Set heading
marker to desired intercept angle.
Change 2 3-44
