AIRPLANE
OPERATIONS
MANUAL
AUTOPILOT
REVISION 40
2-19-10
Page
13
Code
01
AOM-145/1114
GLIDE SLOPE MODE (GS)
The Glide Slope mode allows automatic capture and tracking to Glide
Slope transmitters. Select Glide Slope mode by pressing the APR
button with ILS as a navigation source.
Selecting Glide Slope mode automatically arms GS (in conjunction
with LOC). The PFD will display a white localizer LOC and a white
Glide Slope GS annunciation. The localizer mode capture will occur
with a green LOC annunciation on the PFD. The Glide Slope mode
capture, with a green GS annunciation on the PFD, will occur only
after Localizer mode has been captured.
After captured, the GS mode will be canceled or inhibited if any of the
following conditions occur:
− Pressing the APR or NAV buttons.
− Lost Localizer mode.
− Selecting ALT, SPD, VS, or FLC modes.
− Glide slope deviation invalid for a period greater than
5 seconds.
− Pressing the Go Around Button.
GO AROUND MODE
The Go Around mode may be engaged only at radio altitudes below
2500 ft, or below 15000 ft pressure altitude for an invalid Radio
Altimeter signal. This feature is provided to protect against inadvertent
Go Around selections during cruise.
While this mode is engaged, the Speed knob is inhibited.
The airspeed bug is displayed on the airspeed tape on the PFD and a
pitch limit indicator is displayed on the EADI. If the Stall Protection
Computer signal becomes invalid, the pitch limit indicator is removed.
The Go Around mode is divided into two submodes. The Takeoff
Submode is engaged by pressing the Go Around button when the
airplane is on the ground (weight on wheels), or in flight up to 400 ft
Radio Altitude after the takeoff. Anytime after this, pressing the Go
Around button engages the Go Around Submode.
The Go Around submode, as well as the Vertical Speed Control knob,
is inhibited while Takeoff Submode is engaged.
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