SWITCHING panel

Question 1

What computers feed data to six display units?

Answer 1

Three Display Management Computer (DMC)

Question 2

What do each of the DMC normally supply?

Answer 2

• DMC 1 = captain PDF, ND,”upper ECAM”, and “lower ECAM”.
• DMA 2 = first officer PFD, ND
• DMC 3 = back up

Question 3

If there are any automatic functions of the DMCs in the event of a failure, explain the automatic logic.

Answer 3

If DMC 1 fails (or DMC3 if “CAPT3” was selected, DMC 2 automatically drives the ECAM.

Question 4

What are the indications on the DUs if a DMC has failed?

Answer 4

“INVALID DATA” will be displayed in the respective EFIS/ECAM display unit.

Question 5

What happens when the upper ECAM display fails?

Answer 5

The E/WD automatically replaces the SD on the lower ECAM display.

Question 6

If both the E/WD and SD display unit fails, how can the E/WD information be display?

Answer 6

By selecting the ECAM/ND XFR switch to CAPT or FO