Auto Flight Flashcards
When will the FGCS automatically select half-bank? What is the bank angle?
FL250
17° bank angle
What is FPA?
Flight Path Angle is a pilot-selectable pitch attitude (in degrees) of climb or descent
FGCS adjusts thrust & pitch to maintain path angle and airspeed
What does the TOGA button do?
On ground:
Activates takeoff guidance crossbars
In flight:
Activates Go-Around guidance, sets power
What do the takeoff guidance crossbars do?
Maintain extended runway centerline until 100kts then transitions to TRACK
Maintain pitch guidance according to slat/flap setting, until another vertical mode is selected
When is the TOGA mode deactivated?
Another vertical mode is selected
Autopilot is activated
TCS button is pressed
When will the FD automatically display?
TOGA button is pressed
Autopilot is activated (ROLL / FPA unless some other mode is selected prior)
Windshear detection
Any mode is selected on the FMA
What is the function of the TCS button?
Allows manual override of the autopilot
What will disengage the autopilot?
AP button on GP is pushed
Any manual pitch trim is activated
Either AP/TRIM DISC button is pushed
Stick shaker activated
Windshear escape guidance is activated
Elevators in direct mode
Aileron or elevator controls disconnected
Overpowering the yoke
Internal system failures
Can the yaw damp be deactivated if the autopilot is on?
Yes, it is independent of the autopilot
When will the auto-throttles engage on the ground? In flight?
On ground:
AT TO (GP) is armed & TLA > 50°
In flight:
AT (GP) is armed & airplane > 400 ft AGL
Will the auto-throttles compensate for gusty wind conditions?
Yes, up to 5 kts
What will disengage the auto-throttles?
AT (TL or GP) is pushed
TLA difference > 8°
TL at idle with weight-on-wheels or wheels spinning
Internal system failures
Thrust levers pushed beyond TOGA
What is SPDe? What mode uses SPDe?
Speed on Elevator, thrust is fixed and pitch is adjusted to maintain airspeed (VS changes)
FLCH uses SPDe for climbs and descents
What is SPDt? What modes use SPDt?
Speed on Thrust, thrust is adjusted to maintain selected airspeed
FPA, VS, GS, ALT, ASEL, PTH
What are the AT modes?
SPDe, SPDt, TO, GA, HOLD, RETARD (@ 30 ft RA)
What does LIM & OVRD mean on the FMA?
LIM:
The selected vertical mode requires more or less engine thrust than is available
OVRD:
The TL are being manually moved (no AP or AT disengagement)
When is CRZ automatically selected?
When leveled on ALT for 90 seconds
Desired airspeed must be achieved, or it will remain in CLB mode
What does the SRC button do?
Selects pilot or co-pilot as the data source for the AFCS
What does the red AP/TRIM DISC button on the yoke do?
Disconnects the autopilot
Stops all trim actuation if button is pushed and held
What does the PREV button do?
Allows the capture of ILS/BC course while still using the FMS as the basic NAV source provided the AUTO TUNE function is enabled on the MCDU and the approach is loaded in the FMS
