Autoflight VPrep -FMGS Modes of Operation

Question 1

If AP1 is selected which FMGC is the master?

Answer 1

FMGC1

Question 2

What controls both indications on the FMA?

Answer 2

The master FMGC

ie. The FMGC on the side with AP engaged

Question 3

Which FMGC controls the auto thrust?

Answer 3

The master FMGC

Question 4

If no AP is engaged, which FMGC controls auto thrust?

Answer 4

FMGC1

Question 5

The master FMGC controls….?

Answer 5

• Both FMA indications

- Auto thrust

Question 6

Can either MCDU insert data or control the master FMGC?

Answer 6

Yes

Question 7

When does the system automatically select independent mode?

Answer 7

When calculations or data being exchanged do not match

Question 8

What is different on the POSITION MONITOR page on the MCDU when in independent operation?

Answer 8

Opposite FMGC position calculation is not shown

Question 9

What is different on the RADNAV page on the MCDU when in independent operation?

Answer 9

The aids the opposite FMGC is using is not shown

Question 10

When in Independent Operation, can the system be reset both inflight and on the ground?

Answer 10

Yes (see QRH)

Question 11

What happens when an FMGC fails completely?

Answer 11

• the system automatically goes into single mode operation

- Info from remaining FMGC is sent to both pilot displays and MCDU’s

Question 12

What message appears in the scratchpad on the failed side when a single FMGC fails completely?

Answer 12

OPP FMGC IN PROGRESS

Question 13

When a single FMGC fails completely, what must the pilot on the failed side do to receive nav data on their screen?

Answer 13

Set their range mode distance to match other pilot

Question 14

When a single FMGC fails completely, can both MCDU’s be used to insert data into the operative FMCG?

Answer 14

Yes

Question 15

If both FMGC’s fail what mode does the FMGS downgrade to?

Answer 15

Back up Nav mode

Question 16

In Back up Nav mode are the AP’s or FD’s available

Answer 16

No, AP and FD’s are unavailable

Question 17

In back up Nav mode is the bird available?

Answer 17

Yes, the bird is available by pressing the TRK/FPA pb

Question 18

In back up Nav mode, auto thrust is temporarily lost. How can it be recovered?

Answer 18

By pressing A/THR pb on the FCU

with speed controlled on the FCU

Question 19

In back up Nav Mode how is the ND affected?

Answer 19

ND shows amber MAP NOT AVAIL

Question 20

How can Back up Nav be selected?

Answer 20

Through the MCDU menu page

Question 21

Is aircraft position information available in Back up Nav?

Answer 21

Yes, through IRS (GPIRS)

Question 22

With both FMGC’s failed (Back up Nav Mode) how can the aircraft be flown along te navigation route which is memorised by the MCDU’s?

Answer 22

Manually