BOMBARDIER LEARJET 40 Pilot's Manual page 71

Pilot's Manual
Course set knobs — A course set knob (CRS 1 and CRS 2) is located at
each end of the FGC. These knobs are used to individually set the
courses on the left and right PFD HSI displays. They are used primarily
to set the course for a VOR radial or LOC course. The course knobs
have a push button in the center to synchronize the display to the air-
craft's "direct-to" course.
Heading set knobs — Heading is selected via a rotary knob, with a
"Heading Bug" symbol on the face of the knob. The heading knob con-
trols the heading bug and digital display on both PFDs and the bug on
the MFD MAP display. Depressing the HDG knob will synchronize the
HDG bug on all display units to the aircraft's current heading.
HDG (heading) button — Depressing the HDG button engages the
heading mode and displays a green HDG annunciation on the PFDs.
The flight director command bars will command a turn in the direction
the heading bug was moved to achieve the set heading. Heading select
is used to maintain a magnetic heading. The heading bug is positioned
to the desired heading on the HSI using the HDG knob on the FGC. The
heading select mode is canceled when any armed lateral mode captures
or if GA is selected.
NAV (navigation) button — Pressing the NAV button alternately se-
lects and deselects the navigation mode. The NAV mode is normally
used to intercept route segments identified with VOR radials and to in-
tercept and fly desired FMS tracks (SIDs, routes, holding and STARS).
APP (approach) button — The intended function of the APP mode is
that APP be used for all approaches, regardless of nav source or wheth-
er a vertical mode is also associated with the approach. The APP mode
is normally used to select lateral and vertical steering for ILS and FMS.
The VOR approach mode is selected by pressing the APP mode button
with the navigation receiver tuned to a VOR frequency and selected as
the active nav source. Pressing the APP button arms both localizer and
glideslope modes when the navigation receiver is tuned to an ILS fre-
quency and ILS is selected as the active navigation source. Selection of
APP mode when the nav source is FMS engages the FMS lateral mode
the same as described for NAV and also arms VNAV for approach.
BNK (bank) button — Pressing this button alternately selects or dese-
lects a reduced maximum bank angle of 14° (for all lateral modes, ex-
cept roll) on both FDs. When selected, a green low bank arc appears on
the top of the ADIs and BNK is annunciated on the PFD.
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