Autoflight Questions 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
What do the takeoff guidance crossbars do?
- Maintain extended runway centerline
- Maintain pitch guidance according to slat/flap setting
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
- Windshear detection
What is the function of the TCS button?
- Allows manual override of the autopilot
- When released, airplane maintains new altitude (provided ALT was the active vertical mode) but will return to previously lateral mode (except ILS, autopilot will recapture the LOC/GS)
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
- Flight controls 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
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
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 disengagement)
When is CRZ automatically selected?
- When +100 ft of selected altitude 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
