Avidyne DFC90 - Engagement and Hold Limits

1-14 System Overview
ENGAGEMENT AND HOLD LIMITS
The DFC90 has maximum engagement limits beyond which the
autopilot may not allow a mode to be selected, and maximum
hold limits for various parameters. The engagement limits of the
autopilot are wider than the hold limits. If the autopilot is engaged
between the maximum engagement limits and the maximum hold
limits, the autopilot will reduce the value to be within the
published maximum hold limits. (* value may vary with airframe)
The maximum engagement and hold limits are as follow:
Autopilot Mode
Maximum
Demonstrated
Engagement Limits
Maximum
Hold Limits
Roll Hold
±60 bank
±22 bank
Heading
±60 bank
±22 bank (but
typically holds 1
standard rate of turn)
Pitch Hold
±30 pitch
±10 pitch
IAS Hold
20 KIAS to V
ne
1.2V
s
to 185* KIAS
VS Hold
±1600 fpm
±1600 fpm
Straight and
Level
±60 bank, ±30 pitch
Will stabilize in +2
pitch and zero bank
angle
Localizer, VOR,
GPS approach
Capture
Not Applicable
±22 bank
Localizer, VOR,
GPS approach
Track
Not Applicable
±10 bank
Change 3