Garmin Cessna Caravan G1000 Cockpit Reference Manual page 32

AFCS
Roll Hold Mode (ROL)
Bank Angle Flight Director Response
< 6 deg Rolls wings level
6 to 22 deg Maintains current aircraft roll attitude
> 22 deg Limits bank to 22 degrees
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Garmin G1000 Cockpit Reference Guide for the Cessna Caravan
190-00748-00 Rev. C