Cockpit Reference Guide

Garmin G1000 Cockpit Reference Guide for the Cessna Nav III
190-00384-08 Rev. A
SECTION 6 – AUTOMATIC
FLIGHT CONTROL
6-17
Roll Modes
• Roll Hold (default mode) — Holds the current
aircraft roll attitude or rolls the wings level,
depending on the commanded bank angle
• Heading Select — Captures and tracks the Selected
Heading
• Navigation (GPS, VOR, LOC) — Captures and
tracks the selected navigation source
• Backcourse — Captures and tracks a localizer
signal for backcourse approaches
• Approach (GPS, VAPP, LOC) — Captures and tracks
the selected navigation source with greater sensitivity
for approach
• Go Around — Commands a constant pitch angle
and wings level while in the air
The following table relates each roll mode to its
respective control and annunciation. Refer to the pitch
modes section for information regarding Go Around and
Takeoff Modes.
Roll Mode Control Annunciation
Roll Hold (default) ROL
Heading Select HDG Key HDG
Navigation, GPS Arm/Capture/Track
NAV Key
GPS
Navigation, VOR Enroute Arm/Capture/Track VOR
Navigation, LOC Arm/Capture/Track
(No Glideslope)
LOC
Backcourse Arm/Capture/Track
BC Key BC
Approach, GPS Arm/Capture/Track
APR Key
GPS
Approach, VOR Arm/Capture/Track VAPP
Approach, ILS Arm/Capture/Track
(Glideslope Mode automatically armed)
LOC
Go Around (in air)
GA Switch GA
Table 6-2 Roll Modes
The CWS Button does not change lateral references
for Heading Select, Navigation, Backcourse, or Approach
modes. The autopilot guides the aircraft back to the
Selected Heading/Course upon release of the CWS
Button.
Roll Hold Mode (ROL)
NOTE: If Roll Hold Mode is activated as a result
of a mode reversion, the flight director rolls the
wings level.
When the flight director is activated (the FD or AP Key
is pressed), Roll Hold Mode is selected by default. This
mode is annunciated as ‘ROL’ in the AFCS Status Box. The
current aircraft bank angle is held, subject to the bank
angle conditions listed in Table 6-3.