Cessna 1980 182Q Pilot's Operating Handbook And Flight Manual page 249

PILOT'S OPERATING HANDBOOK
SUPPLEMENT
14
HSI
(TYPE IG-832C)
4. HEADING REFERENCE (LUBBERLINE) - Indicatesaircraftmagneticheading
on compass card (6).
'5. HEADING WARNING FLAG (HDG) - When flag is in view, the heading display
is invalid due to interruption of either electrical or vacuum power.
6. COMPASS CARD - Rotates to display heading of airplane with reference to
lubber line (4). Must be set to agree with aircraft compass using Card Set Knob (9).
7. COURSE DEVIATION DOTS - Indicates aircraft displacement from VOR, or
localizer beam center. A full scale (2 dots) course deviation bar (15) displacement
represents the following deviations from beam center:
a. VOR
=
±100 approx.
b. LOC = ±2-1/2° approx.
8. TO/FROM INDICATOR FLAG - Indicates direction of VOR station relative to
selected course.
9. HEADING SELECTOR AND CARD SET KNOB (PUSH
A
CARD SET) - When
rotated in normal (out) position, positions heading "bug" (14) on compass card (6)
to indicate selected heading for reference or for autopilot tracking. When pushed
in and rotated, sets compass card (6) to agree with magnetic compass. The omni
bearing pOinter (2), heading bug (14), and deviation bar (15) rotate with the
compass card (6).
NOTE
The compass card (6) must be reset periodically to compensate for
precess:c;.a~
errors In the gyro.
10. CO"C'RSE SELECTOR!
+J
KXOB- When rotated. positions omni bearing pointer
(2) on the compass card (6) to select desired VOR radial or localizer course.
11. GLIDE SLOPE SCALE - Indicates displacement from glide slope beam center. A
glide slope deviation bar displacement of 2 dots, represents full scale (0.7°)
deviation above or below glide slope beam centerline.
12. GLIDE SLOPE POINTER - Indicates on glide slope scale (11) aircraft displace-
ment from glide slope beam center.
13. GLIDE SLOPE FLAG - When in view, indicates glide slope receiver signal is not
reliable.
14. HEADING BUG - Indicates selected reference heading relative to compass card
(6).
15 CO"C'RSE (OMNI) DEVIATION BAR - Bar is center portion of omni bearing
pomter and moves laterally to pictorially indicate relationship of aircraft to
selected course. It relates in degrees of angular displacement from VOR radials or
Ioealizer beam center (see Item 7).
Figure
1.
Horizontal Situation Indicator (HSI) (Type IG-832C)
(Sheet 2 of 3)
1 October 1979
3