Vertical Speed (Up/Dn) Mode Buttons; Autopilot Disconnect Switch; Manual Electric Trim (Met) Switches - Cessna 172R Operating Handbook

SECTION 9 SUPPLEMENTS
-
SUPPLEMENT 15
9. VERTICAL SPEED (UP/DN)
of these buttons depends
pressed. If VS mode is
the UP button is pressed, the autopilot will modify the
displayed VS command (FPM) in the up direction.
momentary
increment the VS command by 100 FPM per cycle. When
either button is continuously held in, it will modify the vertical
speed command by 300 fpm per second.
If ALT mode is active, pressing the UP/DN buttons will
the captured altitude by 20 feet per cycle, or if held
continuously
of 500 FPM, synchronizing
airplane altitude upon button release.
10. AUTO PILOT CIRCUIT BREAKER
breaker supplying
. WARN
11 C/B
airplane's annunciator panel (PITCH TRIM).
12. AUTOPILOT DISCONNECT
When depressed will disengage the autopilot and interrupt
manual electric trim (MET) power. An autopilot
will be annunciated by a continuous 2 second
accompanied by flashing "AP" annunciations on the autopilot
computer display.

13. MANUAL ELECTRIC TRIM (MET) SWITCHES

switches are pressed in the same direction the trim
will provide pitch trim in the selected direction. Use of manual
electric trim during autopilot operation will disengage
autopilot.
Figure 2. Bendix/King 2-Axis KAP 140 Autopilot, Operating
S15-10
- FAA APPROVED
on the vertical mode
active
cycles on either the UP or DN button will
will command the airplane up or down
28 VDC to the
Power the autopilot disconnect horn and the
to
-
Controls and Indicators (Sheet 3)
MODE BUTTONS
(AP plus any lateral mode) and
the ALT reference
A 5-amp pull-off circuit
-
KAP 140
system.
(A/P DISC/TRIM INT)
CESSNA
MODEL 172R
The action
--
present when
Single
modify
the rate
at
the actual
to
SWITCH
-
disconnect
tone
When both
-
system
the
Revision 2