Beechcraft C-12C Operator And Technical Reference Manual page 261

1. Compass Card
2. Heading Marker
3. Lubber Line
4. Course Arrow
5. HEADING Flag
6. COURSE Indicator
7. NAV Flag
(1) Copilot's VOR 1 / 2 Switch.
course select and display circuits of the HSI.
(a) VOR 1.
VOR No. 1 receiver.
(b) VOR 2.
VOR No. 2 receiver.
(2) Copilot's COMPASS # 1 / # 2 Switch.
Selects desired source
information for display on compass card of indicator.
c. Copilot's Horizontal Situation Indicator.
Refer to Figure 3A-9.
(1) Heading Marker.
knob to selected heading.
(2) COMPASS Flag.
reliable heading information.
Figure 3A-8. Pilot's Horizontal Situation Indicator
Controls
Circuits are connected to
Circuits are connected to
for magnetic heading
Positioned by HDG
Indicates loss of
8. COURSE Control
9. Course Deviation Bar
10. To-From Arrow
11. HDG Control
12. GS Flag
13. Glideslope Pointer
(3) Lubber Line.
aircraft.
(4) Course Arrow. Positioned by COURSE
knob to selected VOR radial.
(5) Compass
magnetic heading supplied by system selected on
copilot's COMPASS # 1 / # 2 switch.
(6) COURSE Indicator.
readout of course selected by the COURSE knob.
(7) VOR LOC Flag.
unreliable navigation signal.
(8) COURSE Control Knob. Used to select
desired VOR course.
(9) Course Deviation Bar. Indicates lateral
course deviation selected by the copilot's VOR 1 / 2
switch.
TM 1-1510-218-10
Indicates heading of
Card. Indicates aircraft
Presents a digital
Indicates loss of or
3A-19