F2000EX EASY
02-22-10
CODDE 1
PAGE 19 / 22
DGT94085
ATA 22 – AUTO FLIGHT
DESCRIPTION
ISSUE 3
DASSAULT AVIATION Proprietary Data
■
Throttle retard mode
When the AT is engaged and the airplane descending through 20 ft radio altitude,
the AT will retard throttles to IDLE, then disengage after touch down (WOW). The
FMA displays a green RTR symbol as the active N1 limit, until AT disengagement.
■
Thrust reduction mode
This mode is initiated by a HGS order entailing automatic throttles reduction during
flare out. AT displays and operation in this mode is the same as in the throttle retard
mode described above.
Auto-Throttle limits
■
N1 limit
The FMA displays a green N1 indication, and just below the active N1 limit:
-
CRU, if the N1 upper limit is MAX CRUISE.
■
Speed limit
The upper speed limit is VMO / MMO and the lower speed limit is low speed cue.
NOTE
Automatic protection is not provided for VFE.
Auto-Throttle authority
The Auto-Throttle behaviour is not determined as for the Thrust Director.
For reasons of comfort, the AT does not follow directly the TD orders, which are intended
and optimized for a hand flying.
Voluntarily, the AT authority has been limited when the flight level change is not important
or when the rate of climb is still important (more than 5,000 ft/min).
