Bendix/King KAP140 Autopilot

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Revision as of 12:24, 22 November 2007 by Sambar (talk | contribs) (→‎Quick Guide: add picture,ARM button and number)
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Introduction

The default Cessna 172 has a "Bendix/King KAP140 Two Axis with Altitude Preselect" autopilot. It controls the elevator and the ailerons.

The Pilots Guide can be downloaded here

Quick Guide

KAP140 Two Axis with Preselect Altitude

  1. To activate the autopilot in wings level (ROL) and vertical speed (VS) modes press the AP button. The autopilot will try to keep the wings level by keeping the turn rate at zero. The autopilot will also try to maintain the vertical speed at activation. Use the UP and DN buttons to set the desired vertical speed.
  2. With the autopilot active you can use the HDG button to toggle between wings level (ROL) and heading select (HDG) modes. In heading select mode the autopilot will try to maintain the heading selected by the heading bug on the directional gyro.
  3. Use NAV button to toggle between Navigation mode(NAV) and wings level(ROL) mode . NAV mode is flying to NAV1 or GPS.That is one of the Heading modes in KAP140 that direction when heading bug OBS operated. Please be careful.
  4. Toggle other mode and Approach(APR) mode when APR button pushed and following Marker beacon, VOR,GPS and ILS(localizer,glide slope) for automatic approach.This mode is recommended for instrument approach.
  5. REV button pushed when autopilot was flying an aircraft from away the runway.This mode is like APR mode except direction to LOC(localizer) and cannot use GS(Glidesrope).
  6. Use the ALT button to toggle between vertical speed (VS) and altitude hold (ALT) modes. In altitude hold mode the UP and DN buttons change the altitude by 20 feet per press.
  7. ARM button is toggle enable to disable altitude preselect by rotery knob.
    • First , input currently atmospheric pressure using BARO button and rotary knob
    • Second ,check display is showing altitude and set your desire altitude , using rotary knob.
    • Third , set your desire vertical speed using UP and DN button.
    • Finaly , press ARM button that is enable ARM mode.
  8. BARO button pushed , you will look now atmospheric pressure and please set it in the correct pressure with a right dial.
  9. Press the AP button to deactivate the autopilot. The horizontal and vertical modes can not be activated independently.


Please read the Pilots Guide for complete instructions on the use of the KAP140 Autopilot system.

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