02-22-05
F2000EX EASY
PAGE 4 / 4
CODDE 1
ISSUE 3
ATA 22 – AUTO FLIGHT
GENERAL
DGT94085
DASSAULT AVIATION Proprietary Data
AP and AT modes status (armed, engaged) and their references are displayed on the Flight
Mode Annunciator (FMA) on each ADI, according to the EASy color code. Only one vertical
AP mode and one lateral AP mode may be active at the same time. However, one vertical
armed and one lateral armed modes can be simultaneously selected, for example when APP
(approach mode) is armed, LOC and GS are armed.
Activation of the Touch Control Steering (TCS) function allows the crew to manually set a new
reference attitude and path without disengaging the AP. When the TCS pushbutton (on the
yoke) is depressed, the AP servomotors are disengaged allowing the pilot to fly the airplane.
Release of the TCS button will re-engage the AP servomotors. The FD will synchronize on the
new reference values or return to its previous target, depending on previous active modes.
When AP is not engaged, an automatic Mach trim increases manual longitudinal stability of
the airplane at high Mach numbers (above 0.77) by adjusting the horizontal stabilizer position
as Mach number is changing.
Mach trim is automatically engaged at airplane power up and cannot be manually
disengaged.
With the Mach trim system engaged, the normal trim can be used at any time to adjust the
stabilizer position. Once the normal pitch trim switch is released, the Mach trim system will
resume its operation.
When AP is engaged, an auto-trim is provided by the AFCS.
A Yaw Damper (YD) independent from the AP provides automatic stabilization in yaw during
manual handling of the airplane, and turn coordination during AP operation.
NOTE
FD and/or TD orders can also be flown manually (AP and/or AT disengaged, lateral and vertical
modes remain active).
