CHAPTER 1. AP-4000
1.5. CRS / HDG
Using the knob(s), choose the desired altitude and then press the ARM button to arm the altitude capture
mode. This will cause ARM to appear on the indicator. Use pitch attitude hold or select a vertical speed to
guide the aircraft to the desired altitude. As the aircraft nears the desired altitude the system computes a
roundout and will indicate altitude capture (CAPT) as the aircraft levels o. Once the aircraft has levelled
o, the vertical speed mode disengages and the CAPT indication disappears.
Altitude alerting is provided by the KAS 297B and alerts the user with a two second aural tone at
±
1000
ft from the target altitude. An alert annunciation comes on with the tone and stays on until 300 ft from
the target altitude. The aural tone also sounds again for two seconds when the aircraft reaches its selected
altitude. The system also provides an aural warning any time the aircraft's altitude varies more than 300
feet from the selected altitude after level o.
1.4.2 Vertical Speed Pre-Select
To pre-select a vertical speed the unit must rst be indicating ft/min. If not, pull the inner concentric knob
when using a mouse or ip the toggle switch to V/S when using an ELITE avionics panel. Use the knob(s)
to select the desired vertical speed. The indicated up/down arrows show whether a climb or descent has
been selected. To engage the selected rate press ENG and VS will appear on the indicator. Engaging the
vertical speed function will cancel the ALT mode if being used. There are several ways to change the rate
of vertical speed once the function is engaged:
1. By rotating the knob while in V/S mode
2. By pressing the CWS button on the yoke and pitching to a new vertical speed value
3. By pressing the vertical trim switch on the autopilot. Using the vertical trim switch will aect a 100
feet per minute change in vertical speed for every second it is pressed
1.5 CRS / HDG
Figure 1.12: ELITE Course / Heading
The Course/Heading panel of the Avionics stack is used to set course and headings using either the HSI/
ight director (if equipped) or using VOR #1 OBS and VOR #2.OBS.
The barometric pressure can be set by turning the ALT knob.
The MDI knob has dierent functions, depending on the aircraft module loaded. In aircraft equipped with
an radio magnetic compass the MDI button selects the course, on aircraft equipped with a radio altimeter
(e.g. the Beech King Air) the MDI button selects the radio altimeter bug.
A 2-position switch (CRS or OBS) is used to assign the CRS knob to function as a course selector for HSI
or OBS.
The module also includes buttons for Freeze, the Instrument Panel and the Map page to speed up the
selection of the most important pages.
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