Flight Instruments

Question 1

Which buses power Captain / First Officer IB or OB Display Units (DU)?

Answer 1

The 28 VDC standby bus provides input power to the Left Captain’s Outboard and Inboard DU’s. The 28 VDC BUS 2 powers the Right First Officer’s Inboard and Outboard DUs.

Question 2

When would you use the BOTH on 1 or BOTH on 2 on the Display Control Panel?

Answer 2

When EFIS control panel is failed. (Displays control panel annunciation)

Question 3

What happens following an OB DU failure?

Answer 3

The MFD display adjacent to the failed DU is replaced by a reduced size PFD. The left and right edges of the PFD are cropped and the AUX display is removed from the side of the PFD. A condensed version of the AUX display is placed at the top of the PFD. This allows the half-sized PFD display to fit. No information on the PFD is lost
with the half-sized display.

Question 4

What normally powers the ISFD?

Answer 4

The battery bus powers the ISFD

Question 5

Which approaches can be flown using the ISFD?

Answer 5

ILS

Question 6

Can you select weather and terrain to be displayed on the same ND?

Answer 6

NO