F2000EX EASY
02-22-15
CODDE 1
PAGE 3 / 10
DGT94085
ATA 22 – AUTO FLIGHT
SPEED PROTECTION MODE
ISSUE 3
DASSAULT AVIATION Proprietary Data
GENERAL RULES FOR SPEED PROTECTIONS
At speed protection activation an aural warning is triggered. The speed protection
engagement will depend on the status of the autopilot and auto-throttle:
-
if the autopilot and the auto-throttle are engaged, the system is configured to stay within
the normal speed flight envelope,
-
if the autopilot is engaged and the auto-throttle is not engaged, the auto-throttle will
automatically be engaged when speed protection conditions are triggered,
-
if the autopilot and the auto-throttle are not engaged, there is no automatic engagement of
autopilot and auto-throttle when speed protection conditions are triggered. It is crew
responsibility to make the appropriate maneuvers. Whether autopilot modes are displayed
in the Flight Mode Annunciator (FMA) or not, the system automatically displays the Flight
Director (FD) and Thrust Director (TD) orders on both ADI to guide the crew in re-entering
the normal speed flight envelope.
In particular, there is no speed protection:
-
when flying above a Velocity Constraint (VFE, PITCH FEEL, AIL FEEL, ...),
-
when flaps are extended; only a continuous FLAPS voice message is triggered when the
airplane is flying above VFE.
WARNING
EVEN WHEN SPEED PROTECTION MODE IS ACTIVE (AP ON, AT ON), IF SPEED
REACHES THE RED LOW SPEED CUE, A CONTINUOUS "STALL" AURAL WARNING
WILL BE TRIGGERED AND THE AUTOPILOT WILL AUTOMATICALLY DISENGAGE.
THE CREW WILL HAVE TO MANUALLY RE-ENTER THE NORMAL SPEED FLIGHT
ENVELOPE.
