Day 5 - Flight Management/Guidance

Question 1

How can you interface with the FMGC?

Answer 1

FCU, Thrust Levers, MCDU

Question 2

How many FMGS modes are there?

Answer 2

4 modes

Question 3

What does Dual Mode mean?

Answer 3

Normal mode

The 2 FMGCs are synchronised. Each performs its own computations and exchanges data through a crosstalk bus

Question 4

Which FMGC is the master and which is the slave when AP1 is engaged?

Answer 4

One FMGC is the master and the other is the slave. If one AP 1 is engaged, the respective FMGC (FMGC 1) is the master.

The opposite is also true

Question 5

In dual mode, if both APs are engaged, which FMGC is master?

Answer 5

FMGC 1 is master

Question 6

In dual mode, if no AP/FD is engaged, then which FMGC controls the A/THR?

Answer 6

FMGC 1

Question 7

What is FMGC independent mode?

Answer 7

Both FMGCs work independently and are linked only to their “onside” peripherals

Question 8

If the FMGC is in independent mode, how would you know?

Answer 8

“Independent mode” message displayed on both MCDU scratchpads

Question 9

What is FMGC single mode?

Answer 9

Only 1 FMGC working due to failure.

Question 10

In FMGC single mode, are both MCDUs mirrored or operate independently?

Answer 10

Both MCDUs display information from the operational (working) FMGC.

Inputs can be made on either MCDU

Question 11

In single mode, what message will appear on the ND 2 if FMGC 2 has failed and the ‘EFIS CP not in the same mode/range”

Answer 11

‘MAP NOT AVAIL’ in red
SET OFFSIDE FM CONTROL in Amber

Question 12

In single mode, what message will appear on the ND 2 if FMGC 2 has failed and the ‘EFIS CP is in the same mode/range”?

Answer 12

‘OFFSIDE FM CONTROL’

Question 13

Does the back up NAV mode auto select on the FMGC?

Answer 13

No. Flight crew select this mode when both FMGCs fail from the MCDU menu

Question 14

What are the 4 FMGC mode?

Answer 14

Dual
Independent
Single
Back up

Question 15

When actual NAV accuracy drops below required NAV accuracy, what messages appear and where?

Answer 15

An amber warning “NAV ACCUR DOWNGRAD” will appear on both the ND and MCDU scratch pad

Question 16

When actual NAV accuracy increases above required NAV accuracy from below, what messages appear and where?

Answer 16

A White advisory message, “NAV ACCUR UPGRAD” and is displayed on both the ND and MCDU scratch pad

Question 17

In the FMGC, what does Amber, Green and blue mean?

Answer 17

Amber - Required for normal operation

Green - Can’t be changed

Blue - Can be changed

Question 18

How many phases of flight does the MCDU have?

Answer 18

8 phases

Question 19

What does a megenta circle mean around a way point?

Answer 19

Managed by FMGS and the ALT CSTR is predicted to be met

Question 20

What does a white circle around a waypoint mean?

Answer 20

When the ALT CSTR is not taken into account by the FMGS and the NAV mode is engaged

Question 21

Amber circle around a waypoint?

Answer 21

When the ALT CSTR is predicted to be missed

Question 22

What does a blue or white zig zag arrow mean?

Answer 22

Intercept point - where the aircraft is predicted to intercept the descent path (if there is any vertical deviation when the aircraft is in DES mode)

Question 23

If you’re off track, where do the predictions displayed on the MCDU come from?

Answer 23

MCDU predictions are based on assumptions that you’re going to intercept the flight plan at 45 degrees or direct to the next waypoint if the angle is beyond 45 degrees

Question 24

There’s 2 parts to the FMGC. Part 1 is flight management controlling predictions, display management, flight planning management and NAV/radio navigation management, but part 2 is what?

Answer 24

Flight guidance. Controlling auto pilot, auto thrust and flight directors

Question 25

The FCU is used for ……… term corrections

The FMGS is used for …….. term flight path management

Answer 25

Short term correction.

Long term flight path management

Question 26

If you level off before the target altitude, the MCDU will stay in what phase ?

Answer 26

Climb phase

Question 27

Does the auto pilot disconnect when below VLS in climb or open climb?

Answer 27

Yes

Question 28

Will auto thrust stay connected if you exceed 25 dgeees nose up?

Answer 28

Yes. Even though auto pilot disconnects

Question 29

If the FD is not engaged, but we engage the AP, what mode engages?

Answer 29

AP basic mode. Which is HDG/TRK and V/S/FPA

Question 30

When can you engage both APs?

Answer 30

Only if one of the following conditions is met;

LOC is armed

G/S is armed

Go-around engaged

But AP1 is always the active and AP2 is SBY always

Question 31

SRS in the climb with 2 engines targets what speed?

Answer 31

V2 + 10 kts

Question 32

SRS on the ground targets what speed?

Answer 32

V2

Question 33

In climb/descent mode on the FMA, what controls speed?

Answer 33

Pitch

Question 34

If you descend before TOD, what ROD do you get?

Answer 34

1000 ft/min until it intercepts the DPO (descent profile optimisation)

Question 35

Min height to engage the auto pilot inflight?

Answer 35

100ft or 5 secs after takeoff

Question 36

Manual go around auto pilot engagement min alt?

Answer 36

100ft AGL

Question 37

ILS CAT 1 lowest alt with AP engaged?

Answer 37

160ft

Question 38

GLA approach when auto land displayed, what is the minimum altitude for AP engaged ?

Answer 38

0 ft

Question 39

ILS CAT 3 minimum alt with AP engaged.

Answer 39

0ft

Question 40

What are the 2 A/THR modes?

Answer 40

Speed mode and Mach mode

Question 41

With the AP engaged, if you turn off the FD, what mode is the AP now in?

Answer 41

Basic mode

Question 42

What does an amber message on the MCDU me an?

Answer 42

Warning

Question 43

White message on the MCDU?

Answer 43

Advisory

Question 44

On the FMGC, are Amber messages prioritised?

Answer 44

Yes

Question 45

What does the FMA 1FD1 mean?

Answer 45

Both FDs on both PFD using FD 1 data