Textron 172R180HP, Pilot Operating Handbook

Page: 350 / 396

SECTION 9 - SUPPLEMENTS
SUPPLEMENT 7 - FAA APPROVED
CESSNA
MODEL 172R
6. BACK COURSE APPROACH (REV) MODE SELECTOR
BUTTON -- When pushed will select the Back Course
approach mode. This mode functions identically to the
approach mode except that the autopilot response to LOC
signals is reversed.
7. HEADING SELECTOR KNOB (HDG) -- Positions the heading
·----..
bug on the compass card. Note that the position of the
heading bug also provides course datum to the autopilot when
tracking in NAV, APR, or REV (BC) modes. This is in addition
to its more intuitive use in the HDG mode.
8. OMNI BEARING SELECT KNOBS (OBS) -- Selects the
desired course radial to be tracked by the autopilot. (Note that
the HDG bug must also be positioned to the proper course to
capture and track the selected radial).
9. AUTOPILOT DISCONNECT (AP DISC) SWITCH -- When
depressed will disengage the autopilot, activate disc tone and
-,
cancel all operating autopilot modes.
10. AUTOPILOT CIRCUIT BREAKER -- A 5-amp circuit breaker
supplying 28 VDC to the KAP 140 system.
11. WARN C/B -- Power to the autopilot disconnect horn.
Figure 1. Bendix/King KAP 140 Autopilot, Operating Controls and
Indicators (Sheet 3 of 3)
S7-6
Dec 2/96