Limitations and Performance
6-2
6 Limitations and Performance
LIMITATIONS
1. For non-FIKI approved aircraft: the DFC100 must not be
used during icing conditions;
For FIKI approved aircraft: the DFC100 must not be
used during severe icing conditions. Note that in icing
conditions, periodic autopilot disconnect is
recommended to allow control movement checks. High
forces to move airplane controls are an indication of
severe icing and the autopilot should remain
disconnected until exiting severe icing conditions.
Indications of severe icing include:
a. Indications of frequent autopilot re-trimming
during straight and level flight;
b. Unusually extensive accumulation of ice on the
windshield in areas not normally observed to
collect ice;
c. Accumulation of ice on the upper surface of the
wing aft of the protected area;
d. Accumulation of ice on the engine cowling
and/or spinner further aft than normally
observed;
2. Unusual control force or control deflection, or unusually
large control forces to move flight controls when the
autopilot is disconnected.
3. The DFC100 minimum use height is 200ft AGL. This
means the autopilot must be disengaged for takeoff and
landing and disengaged for missed approach or go
around until climb and configuration are established
above 200ft AGL.
4. DFC100 operations are prohibited in aircraft equipped
with pitch trim-only when flaps are deployed more than
50% (no dedicated pitch servo).
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