Section 3 In-Flight Procedures
3-3
2nd Ed Aug 2019
S-TEC 3100 Digital and Analog
NOTE:
When using FD mode on take-off, the 3100 should be in PITCH and
ROLL hold or Take-Off-Go-Around (TOGA) modes.
3.5.
YAW DAMPER (YD) OPERATION
NOTE:
Not applicable to aircraft without optional yaw damper installed.
YD mode may be engaged or disengaged at any time,
regardless of roll or pitch mode. When YD mode is engaged,
the yaw damper dampens any excessive adverse yaw and
coordinates turns.
Figure 3-2:
Without Optional Yaw Damper Installed
CAUTION:
YD mode should always be disengaged prior to takeoff and landing.
3.6.
ENVELOPE PROTECTION
The 3100 protects against underspeed, overspeed, and excessive bank
conditions using the envelope protection feature. The envelope speed
limits vary between airframes depending on stall speeds, V
NE
, and whether
the aircraft is approved for flight-into-known-icing (FIKI). Specific limits are
stated within the relevant AFMS.
NOTE:
Underspeed and overspeed protection requires IAS data and are not
operational on installations without IAS mode available.
