HDG warning flag
Heading select knob
Rotating heading dial
Course select knob
Course deviation bar and scale
Glideslope pointer and scale
NAV warning flag
Figure 3-9. Copilot's Horizontal Situation Indicator
(11) Heading bug. The orange heading bug is
(2) VOR/localizer warning flag.
positioned on the rotating heading dial by the heading
warning flag will display whenever the VOR or localizer
knob, and displays preselected compass heading. The
bug rotates with the heading dial.
(3) To-from flags. They operate only with a
(12) NAV warning flag. Indicates loss of NAV
usable VOR or localizer signal. The white TO/FR flags
indicate whether the selected course is to or from a
station. When receiving a reliable localizer signal. the
3-18. Course Deviation Indicator (KI 204) (Optional).
TO flag will be in view.
The course deviation indicator
(4) Omni-bearing course card. The card is
when interfaced with the NAV 2 receiver (KN 53).
rotated by the OBS knob for selection of a desired
provides rectangular display of VOR/localizer, and
The indicator incorporates
separate and independent to/from flags, and warning
(5) Omni-bearing selector (OBS) knob. The
flags for both VOR/localizer, and glideslope. The course
OBS knob is used to set a desired VOR/ localizer course
deviation indicator is protected through a 2-ampere
under the course index.
circuit breaker, placarded NAV 2, located on the lower
(6) Glideslope deviation pointer.
glideslope deviation pointer displays the aircraft's
b. Controls and Functions.
position relative to the glideslope. Each dot represents
1/10-degree deviation from the glideslope. The pointer
(1) Course deviation pointer.
is offset 15-degrees for correct viewing.
deviation pointer displays the aircraft's position relative
to the omni (VOR) course, or localizer (LOC) course.
(7) Glideslope (GS) warning flag.
When tracking a VOR course, each dot represents 1-
glideslope warning flag will display whenever the
degree of deviation. When on a LOC course. each dot
represents 1/2-degree of deviation.
Change 5 3-17