automatic flight

Question 1

when will the FGCS automatically select half-bank? what’s the bank angle?

Answer 1

FL250
17 degrees bank angle

Question 2

what is FPA?

Answer 2

Flight path angle is a pilot-selectable pitch attitude (in degrees) of climb or descent
FGCS adjusts thrust and pitch to maintain path angle and airspeed

Question 3

what does TOGA button do?

Answer 3

On ground - activates takeoff guidance cross bars
in flight - activates go-around guidance

Question 4

what do the takeoff guidance crossbars do?

Answer 4

Maintain extended runway centerline
maintain pitch guidance according to slat/flap setting

Question 5

When is the TOGA mode deactivated?

Answer 5

another vertical mode is selected
autopilot is activated
TCS button is pressed

Question 6

When will the FD automatically display?

Answer 6

TOGA button is pressed
autopilot is activated
Windshear detection

Question 7

What is the function of the TCS button?

Answer 7

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)

Question 8

What will disengage the autopilot?

Answer 8

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

Question 9

can the yaw damp be deactivated if the autopilot is on?

Answer 9

yes, it is independent of the autopilot

Question 10

when willl the auto-throttles engage on the ground? in flight?

Answer 10

on ground - AT TO (GP) is armed & TLA > 50 degrees
in flight - AT (GP) is armed and airplane >400 ft AGL

Question 11

will the auto throttles compensate for gusty wind conditions?

Answer 11

yes, up to 5 kts.

Question 12

what will disengage the auto-throttles?

Answer 12

AT (TL or GP) is pushed
TLA difference > 8 degrees
TL at idle with weight-on-wheels or wheels spinning
internal system failures

Question 13

what is SPDe? what mode uses SPDe?

Answer 13

speed on elevator, thrust is fixed and pitch is adjusted to maintain airspeed (VS changes)
FLCH uses SPDe for climbs and descents

Question 14

what is SPDt? what modes use SPDt?

Answer 14

speed on thrust, thrust is adjusted to maintain selected airspeed
FPA, VS, GS,ALT, ASEL

Question 15

what are the AT modes?

Answer 15

SPDe, SPDt, TO, GA, HOLD, RETARD (@ 30 ft RA)

Question 16

What does LIM and OVRD mean on the FMA?

Answer 16

LIM - the selected vertical mode requires more or less engine thrust than is available

OVRD - the TL are being manually moved (NO AP DISENGAGEMENT)

Question 17

when is CRZ automatically selected?

Answer 17

when +100 ft of selected altitude for 90 seconds
desired airspeed must be achieved or it will remain in CLB mode

Question 18

what does teh SRC button do?

Answer 18

selects pilot or co-pilot as the data source for the AFCS

Question 19

what does the red AP/TRIM DISC button on the yoke do

Answer 19

disconnects the AP
stops all trim actuation if button is pushed and held

Question 20

what does the PREV button do?

Answer 20

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

Question 21

describe roll mode - 3 different angles

Answer 21

bank angle at or below 6 degrees - AP levels the wings
bank angle from 6 - 35 degrees, AP will hold present bank angle
bank angle over 35 degrees - AP maintains 35 degrees of bank

Question 22

when does ROLL change to TRACK on takeoff?

Answer 22

IAS greater than 100 kts
bank angle is 3 degrees or below for more than 10 seconds