Flight Instruments and Displays Flashcards
What is the ADIRS?
Air Data Inertial Reference System
How many pitot tubes are there?
3
CA/FO and an auxillary
During normal operation DEU 1 provides information to:
CA Outboard DU
CA Inboard DU
Upper DU
During normal operation DEU 2 provides information to:
FO Outboard DU
FO Inboard DU
Lower DU
What does the DISPLAYS - SOURCE switch do?
Selects which DEU is providing information to the displays
How is a failure of a DEU shown?
DSPLY SOURCE in the bottom left of the Outboard DUs
How is a crew alerted to an inop EFIS control panel? How is this fixed?
DISPLAYS CONTROL PANEL message illuminates below the altitude indication on the inoperative side.
Changing the DISPLAYS - CONTROL PANEL switch to BOTH ON ___ whichever side is operative
What are the two CDS fault messages that appear on the PFD? When will the appear? What is the difference?
CDS FAULT
CDS MAINT
On the ground prior to the second engine start
FAULT is non-dispatchable while MAINT is dispatchable.
CDS - Common Display System
How is the crew alerted to LOC Frequencies disagreeing on the PFD?
LOC Course Disagreeing?
Amber dash through the LOC Freq.
Amber dash through the LOC Course on the PFD
How is the crew alerted to LOC Frequencies disagreeing on the PFD?
LOC Course Disagreeing?
Amber dash through the LOC Freq.
Amber dash through the LOC Course on the PFD
When do the glideslope indications appear on the PFD?
With the localizer tuned and the aircraft within 90 deg. of the localizer course
What happens to the ILS indications during deviations at low radio altitudes?
They turn amber
When does the radio altimeter indication turn amber?
When below set radio altitude minimums
The airspeed trend vector predicts airspeed in ___ seconds
10 seconds
When flaps are not up the high speed limit has an amber bar that comes down to show the placarded speed for the next normal flap setting. The display logic is based on a normal flap setting sequence of:
1, 5, 15, 30
