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Altitude Alerter/ Vertical Speed/ Pitch Trim Baro Setting Annunciation Display
Pitch Axis Annunciator
Roll Axis Annunciator
Button Selector Button
Figure 2: Bendix/King KAP 140 Flight Control Computer
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) ALERT (altitude alert) annunciation. This annunciation is only used when the altitude preselect option is installed.
) It illuminates continuously in the region of from 200 to 1000 feet from the selected altitude if the airplane was previously outside of this region.
) It flashes for two seconds the first time the airplane crossed the selected altitude.
) If flashes continuously in the 200 to 1000 feet region if the airplane was previously inside of this region (i.e., at the selected altitude). Associated with the visual alerting is an aural alert (5 short tones) which occurs 1000 feet from the selected altitude upon approaching the altitude and 200 feet from the selected altitude on leaving the altitude.
) Altitude alerter/vertical speed/baro setting display. This feature is used only if the altitude preselect option is installed. Normally the altitude alerter selected altitude is displayed. If the UP or DN button is pushed while in VS hold, the display changes to the command reference for the VS mode in FPM for 3 seconds. If the BARO button is pushed, the display changes to the autopilot baro setting in either IN HG or HPA for 3 seconds.
The flight control computer has these controls on the front panel:
) Rotary knobs (only if altitude preselect option is installed). These are used to set the altitude alerter reference altitude; or may be used immediately after pressing the BARO button, to adjust the autopilot baro setting to match that of the airplane′s altimeter when manual adjustment is required.
) AP (autopilot engage/disengage) button. When pushed, it engages the autopilot if all logic conditions are met. The autopilot will engage in the basic roll (ROL) mode which functions as a wing leveler and in the vertical speed (VS) hold mode. The commanded vertical speed may be displayed manually in the upper right corner of autopilot display area if either UP or DN button is pressed. The captured VS will be the vertical speed present at the moment of AP button press. When pressed again, it will disengage the autopilot.
) HDG (heading) mode selector button. When pushed, it will select the 'heading' mode, which commands the airplane to turn to and maintain the heading selected by the heading bug on the HSI. A new heading may be selected at any time and will result in the airplane turning to the new heading. The button can also be used to toggle between HDG and ROL modes. This button may be used to engage the autopilot.
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) NAV (navigation) mode selector button. When pushed, will select the navigation mode. The mode provides automatic beam capture and tracking of VOR, LOC or GPS as selected for presentation on the HSI. NAV mode is recommended for enroute navigation tracking.
) APR (approach) mode selector button. When pushed, it will select the navigation mode. The mode provides automatic beam capture and tracking of VOR, GPS, LOC, and Glideslope (GS) on an ILS, as selected for presentation on the HSI. APR mode tracking sensitivity is recommended for instrument approaches.
) REV (back course approach) mode selector button. When pushed, it 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.
) ALT (altitude hold) mode select button. When pushed, it will select the altitude hold mode. This mode provides capture and tracking of the selected altitude. The selected altitude is the altitude at the moment the ALT button is pressed. If the ALT button is pressed with an established VS rate present, there will be approximately a 10 % (of VS rate) overshoot, with the airplane returned positively to the selected altitude. This button may be used to engage the autopilot.
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