S-TEC Fifty Five X - Normal Operating Procedures

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3rd Ed. Sep 30, 06 3-3

S–TEC

Fig. 3-1. AP Display, HDG Mode Engaged

3.1 Normal Operating Procedures

3.1.1 Heading (HDG) Mode

Set the Heading Bug to the desired heading on the compass card (HSI or DG),

and then press the HDG mode selector switch to engage the heading mode.

The HDG annunciation will appear as shown in Fig. 3-1, to acknowledge that

this mode is engaged. The autopilot will turn the aircraft onto the selected

heading and hold it. A new heading can be subsequently selected by setting the

Heading Bug to it.

3.1.2 Navigation (NAV) Mode

Select the VOR frequency on the Navigation Receiver.

Heading System HSI

Set Course Pointer to desired course on compass card.

Heading System DG

Set Heading Bug and OBS to desired course on each respective compass card.

Press the NAV mode selector switch to engage the navigation mode. The

NAV annunciation will appear as shown in Fig. 3-2, to acknowledge that this

mode is engaged.

Fig. 3-2. AP Display, NAV Mode Engaged