飞行翻译_公务机_公务航空_Business Jet_Business Aviation

.
VS (vertical speed);

.
ALT (barometric altitude hold);

.
PTCH (pitch angle); and

.
ROLL (roll angle).

When any flight director mode listed above is active, pressing the FD SYNC switch causes a yellow SYNC message to appear on both PFDs. The SYNC message will be removed when the FD SYNC switch is released.
Pressing the FD SYNC switch while the autopilot is engaged releases the aileron and elevator servo clutches, which allows the flight crew to manually fly the airplane without disengaging the autopilot. The AP engage annunciation will also appear in yellow whenever the FD SYNC switch is being pressed with the autopilot engaged.

NOTE
While the FD SYNC switch is pressed, trimming the horizontal stabilizer will not disengage the autopilot.

AP/FD Synchronization Figure 04.10.13
FD Failure
If the active flight director fails, the flight director command bars are removed from both PFDs and replaced by a red boxed FD annunciation. An FD 1(2) FAIL status EICAS message may also be displayed.
If the active FD fails, selecting the XFR button on the FCP deselects the failed flight director and allows the cross-side flight director to become active.

 AUTOMATIC FLIGHT CONTROL SYSTEM Description  Vol. 2  04.10.16 
Oct 05/06 

Selecting the other AFCS (1 or 2) enables the second pair of FCCs, which would then allow the autopilot to be reengaged.

FD Failure Indications
Figure 04.10.14

Flight Director Lateral Modes
There are eight flight director lateral modes (bold letters refer to the FCP button selections):
.
Roll

.
Heading select (HDG)

.
Half bank (1/2 BANK)

.
Navigation; FMS, VOR, LOC (NAV)

.
Approach; FMS, VOR, LOC (APPR)

.
Back course (B/C)

.
Takeoff

.
Go-around

Lateral modes are armed or activated by push-buttons on the flight control panel or on the thrust levers. In general, deselecting the active lateral mode is accomplished by reselecting the active FCP mode push-button, or by selecting another lateral mode.

Roll Mode
ROLL is the basic lateral operating mode, and is automatically selected when no other lateral mode is active and the flight director is on. A green ROLL annunciation appears in the active lateral field of the FMA when roll mode is active.
Roll mode generates commands to maintain a reference bank angle. If the roll attitude (bank angle) is more than five degrees from level when roll mode is selected, the FCC generates commands to maintain the bank angle. If the roll attitude is less than five degrees, the FCC generates commands to maintain heading by rolling to zero bank (wings level).

 AUTOMATIC FLIGHT CONTROL SYSTEM Description  Vol. 2  04.10.17 
Oct 05/06