Cessna 172SPHUSR05 Pilot Operating Handbook page 353

CESSNA
MODEL 1 72S
5. APPROACH (APR) MODE SELECTOR BUTTON -- When
pushed, will select the Approach mode. This mode provides
automatic beam capture and tracking of VOR, LOC, or GPS
signals as selected for presentation on the NAV # 1 COl or HSI
(if installed). The greater tracking sensitivity of the APR mode
is recommended for instrument approaches.
6.
BACK COURSE APPROACH (REV) MODE SELECTOR
BUTTON -- This button is active only when the COUPled
navigation receiver is tuned to a LOCIILS frequency. When
pushed, it will select the Back Course (BC) approach mode.
This mode functions indentically to the approach mode except
that the autopilot response to LOC signals is reversed.
7. HEADING SELECT KNOB (HOG) -- 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 HOG mode.
8. OMNI BEARING SELECT KNOB (OBS) -- Selects the desired .
course radial to be tracked by the autopilot.
HOG bug must also be positioned to the proper course to
capture and track the selected radial).
9. AUTOPILOT DISCONNECT (AlP DISC) SWITCH -- When
depressed will disengage the autopilot.
disconnect will be annunciated by a continuous two-second
tone accompanied by a flashing "AP" displayed on the
autopilot computer.
O.
1 AUTOPILOT CIRCUIT BREAKER -- A 5-amp circuit breaker
supplying 28 VDC to the KAP 1 40 system.
1 1 . WARN CIB -- Power to the autopilot disconnect horn.
Figure 1 . Bendix/King KAP 1 40 Autopilot, Operating Controls and
May 30/00
SECTION 9 - SUPPLEMENTS
SUPPLEMENT 7 - FAA APPROVED
Indicators (Sheet 3 of 3)
I
l
(Note that the
l
The autoPilot
S7-9