Cessna T182 1982 Pilot Operating Handbook page 226

19
PILOTS OPERATING HANDBOOK CESSNA 300A AUTOPILOT
SUPPLEMENT (TYPE AF-395A)
1. COURSE DEVIATION INDICATOR - Provides VOR/LOC navigation inputs to
autopilot for intercept and tracking modes.
2. LOCALIZER REVERSED INDICATOR LIG HT - Amber light, labeled BC, illum ­
inates when BACK CRS button is pushed in (engaged) and LOC frequency
selected. BC light indicates course indicator needle is reversed on selected
receiver (when tuned to a localizer frequency). This light is located within the CDI
indicator.
3. NON-SLAVED DIRECTIONAL GYRO - Provides a stable visual indication of
aircraft heading to the pilot and provides heading information to the autopilot for
heading intercept and hold.
4. HEADING BUG - Moved by HDG knob to select desired heading.
5. LUBBER LINE - Indicates aircraft heading on compass card (6).
6. COMPASS CARD - Rotates to display heading of airplane with reference to
lubber line (5).
7. HEADING SELECTOR KNOB (HDG) - When pushed in, the heading bug (4) may
be positioned to the desired magnetic heading by rotating the HDG selector knob.
Also used to select VOR or LOC course.
8. GYRO ADJUSTMENT KNOB (PUSH) - When pushed in, allows the pilot to
manually rotate the compass card (6) to correspond with the magnetic heading
indicated by the compass. The compass card must be manually reset periodically
to compensate for precessional errors in the gyro.
9. TURN COORDIN ATOR - Senses roll and yaw for wings leveling and command
turn functions.
10. HDG SEL PUSHBUTTON - Aircraft will turn to and hold heading selected by the
heading "bug" on the directional gyro.
11. NAV INT PUSHBUTTON - When heading "bug" on DG is set to selected course,
aircraft will turn to and intercept selected VOR or LOC course.
12. NAV TRK PUSHBUTTON - When heading "bug" on DG is set to selected course.
aircraft will track selected VOR or LOC course.
13. HI SENS PUSHBUTTON - During N A V INT or N A V TRK operation, this high
sensitivity setting increases autopilot response to NAV signal to provide more
precise operation during localizer approach. In low-sensitivity position (push­
button ou t), response to N AV signal is dampened for smoother tracking of enroute
VOR radials; it also smooths out effect of course scalloping during NAV opera­
tion.
14. BACK CRS PUSHBUTTON - Used with LOC operation only. With AlP switch
OFF or ON. and when navigation receiver selected by NAV switch is set to a
localizer frequency, it reverses normal localizer needle indication (CDI) and
(
causes localizer reversed (BC) light to illuminate. With AI P switch ON, reverses
localizer signal to autopilot.
Figure
1.
Cessna 300A Autopilot, Operating Controls and Indicators
(Sheet 2 of 3)
21 August 1981 3