Section 3 In-Flight Procedures
2nd Ed Aug 2019
S-TEC 3100 Digital and Analog
3-6
AGL. Capturing the glideslope at a different altitude alters the envelope
protection transition point.
CAUTION:
The autopilot deviates when tracking a glideslope in order to protect
airspeed and prevent a potential stall. The pilot is responsible for
maintaining the aircraft speed within the envelope limits stated in
the applicable AFMS.
3.6.4.
“AP ICE SPEED” (FIKI Aircraft Only)
Aircraft approved for FIKI may have different underspeed limits for when
the aircraft icing system is operating or not. Aircraft with this optional input
have an LED on the panel labeled “AP ICE SPEED.”
NOTE:
FIKI approved aircraft without the “AP ICE SPEED” option default to the
higher underspeed protection limit as stated in the AFMS.
The “AP ICE SPEED” LED illuminates when the aircraft de-icing system
is engaged and indicates the underspeed protection limit has changed
to accommodate the increase in aircraft stall speed when flying into icing
conditions.
With the “AP ICE SPEED” LED extinguished, the underspeed limit is lower
and based from the aircraft stall speed in a normal configuration.
All underspeed and overspeed limits are stated within the AFMS.
3.7.
LATERAL MODES
All modes may be selected by pressing the appropriate button on the 3100
bezel. A second press of the active mode button deselects the mode, and
the 3100 reverts to the armed lateral mode or ROLL mode, if there is no
armed lateral mode. For example, if the active mode is heading (HDG)
mode
to deselect HDG and engage ROLL.
