Roll hold mode (rol), Low bank mode, Automatic flight control system – Garmin G1000 King Air C90GT User Manual

Page 437: Changing the roll reference

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190-00663-01 Rev. A

Garmin G1000 Pilot’s Guide for the Beechcraft C90A/GT

423

AUTOMATIC FLIGHT CONTROL SYSTEM

SY

STEM

O

VER
VIEW

FLIGHT

INSTRUMENTS

EIS

AUDIO P

ANEL

& CNS

FLIGHT

MANA

GEMENT

HAZARD

AV

OID
ANCE

AFCS

ADDITIONAL

FEA
TURES

APPENDICES

INDEX

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 or switched, 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
condition.

Bank Angle

Flight Director Response

< 6°

Rolls wings level

6 to 25°

Maintains current aircraft roll attitude

> 25°

Limits bank to 25°

Table 7-4 Roll Hold Mode Responses

Figure 7-23 Roll Hold Mode Annunciation

CHANGING THE ROLL REFERENCE

The roll reference can be changed by pressing the CWS Button, establishing the desired bank angle, then

releasing the CWS Button.

LOW bANk MODE

When in Low Bank Mode, the flight director limits the maximum commanded roll angle to 15

°

. Low bank

arc limits are displayed in green along the Roll Scale.

Low Bank Mode can be manually selected/deselected by pressing the BANK Key while in Heading Select or

Navigation Modes (GPS and VOR). Low Bank Mode is activated automatically above

20,500 feet. The flight

director deactivates Low Bank Mode when descending through 20,500 feet. The annunciator light next to the
BANK Key illuminates while Low Bank Mode is selected.

Figure 7-24 Low Bank Mode Limits

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