Cessna 1980 182Q Pilot's Operating Handbook And Flight Manual page 251

PILOT'S OPERATING HANDBOOK
SUPPLEMENT
SECTION 4
NORMAL PROCEDURES
NOTE
14
HSI
(TYPE IG-832C)
Both electrical and vacuum power must be supplied to this
instrument for proper functioning. Absence of either will
result in unreliable heading information.
Normal procedures for operation of this system differ little from those
required for the more conventional Course Deviation Indicators. However,
several small differences are worth noting.
The rectilinear movement of the omni deviation bar in combination
with the rotation of the compass card in response to heading changes,
provides an intuitive picture of the navigation situation at a glance when
turned to an omni station. When tuned to a localizer frequency, the omni
bearing pointer must be set to the inboard front course for both front and
back-course approaches to retain this pictorial presentation.
When the HSI system is installed with a Cessna 300A (Type AF-395A)
or Cessna 400B (Type IF-550A) Autopilot. a back-course indicator light
labeled BC. is mounted adjacent to the HSI and will illuminate amber when
the reverse sense (REV
S~S)
switch (mounted in the autopilot's accessory
unit on 210 Models) is placed in the ON (LOC 1) position to alert the pilot
that back-course operation is selected. The HSI needle will not be reversed
but the LOC signals to the autopilot will be. Light dimming for the BC light
is only available when installed with an audio control panel incorporating
the annunciator lights DAY /NITE selector switch.
For normal procedures with autopilots. refer to the 300A or 400B
Autopilot Supplements in this handbook
if
they are listed in this section as
options.
SECTI-ON 5
PERFORMANCE
There is no change to the airplane performance when this instrument
is installed.
1 October 1979
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