SWA B737 - Flight Instruments and Displays

Question 1

(Flight Instruments and Displays) What does ADIRS stand for?

Answer 1

Air Data Inertial Reference System (it takes all the readings from different probes, vanes, and internal accelerometers to display Position, Speed, Altitude, and Attitude information to the Flight Crew).

Question 2

(Flight Instruments and Displays) What does DEU stand for?

Answer 2

Display Electronic Unit (2 installed on the aircraft)

Question 3

(Flight Instruments and Displays) What do the DEU’s do?

Answer 3

They are computers that collect and distribute information from various aircraft sensors and systems, this data is then converted to a digital signal and sent to the displays.

Question 4

(Flight Instruments and Displays) During normal operation what Display Units does DEU 1 supply information to?

Answer 4

• The Captain’s outboard DU
• The Captain’s inboard DU
• The Upper DU

Question 5

(Flight Instruments and Displays) During normal operation what Display Units does DEU 2 supply information to?

Answer 5

• The First Officer’s outboard DU
• The First Officer’s inboard DU
• The lower DU

Question 6

(Flight Instruments and Displays) What would happen to the associated Display Units if one if the DEU’s happens to fail?

Answer 6

The system is designed so that the other DEU automatically controls all the Display Units.

Question 7

(Flight Instruments and Displays) Is manual switching of the DEU’s available?

Answer 7

Yes - using the Displays Source Selector on the Overhead Panel, move the switch from “Auto” to “All on 1” or “All on 2” and all Displays will receive information from the selected side.

Question 8

(Flight Instruments and Displays) If one of the DEU’s fails, what indication would the Flight Crew receive?

Answer 8

DSPLY SOURCE message appears in the lower corner of both pilots PFD’s (in FLIGHT this message will appear whether the switch occurred automatically or manually; however on the GROUND this message will only appear if selected manually)

Question 9

(Flight Instruments and Displays) What are some of the systems the DEU’s get their information from?

Answer 9

• Hydraulic
• Engines
• Pitot/Static
• Others

Question 10

(Flight Instruments and Displays) What are the EFIS Control Panels used for?

Answer 10

To control the Pilot’s Displays.

Question 11

(Flight Instruments and Displays) When the DISPLAYS CONTROL PANEL switch in the NORMAL position, which Flight Instruments do the separate EFIS Control Panel’s operate?

Answer 11

• The Left EFIS Control Panel operates the Captain’s Flight Instruments.
• The Right EFIS Control Panel operates the First Officer’s Flight Instruments.

Question 12

(Flight Instruments and Displays) If one of the EFIS Control Panel’s fail, what happens to the associated Flight Instruments?

Answer 12

All the displays can be controlled by the remaining EFIS Control Panel.

Question 13

(Flight Instruments and Displays) If one of the EFIS Control Panel’s were to fail, what indication would the flight crew receive?

Answer 13

DISPLAYS CONTROL PANEL message below the altitude indication on the affected PFD.

Question 14

(Flight Instruments and Displays) If one of the EFIS Control Panel’s fails, how would the Flight Crew set up the remaining EFIS Control Panel to control all the Flight Instruments?

Answer 14

On the DISPLAYS CONTROL PANEL on the Overhead Panel move the switch to “Both on 1” or “Both on 2” (whichever side is working - does not have the DISPLAYS CONTROL PANEL message)

Question 15

(Flight Instruments and Displays) When would the flight crew receive a CDS FAULT or CDS MAINT message on the lower left hand side if the PFD?

Answer 15

On the Ground only, prior to the Second Engine Start.

Question 16

(Flight Instruments and Displays) What is the main difference between a CDS FAULT and a CDS MAINT message.

Answer 16

• CDS FAULT (Amber) - indicates there is a non-dispatchable fault in the CDS system.
• CDS MAINT (White) - indicates there is a dispatchable fault in the CDS system.

Question 17

(Flight Instruments and Displays) What does the top of the Minimum Speed Bar indicate?

Answer 17

Speed at which the Stick Shaker activates.

Question 18

(Flight Instruments and Displays) What does pressing the CTR button on the EFIS Control Panel do?

Answer 18

Display the full Compass Rose, also the route, waypoints, and TCAS traffic BEHIND the aircraft are in view (however WX Radar and Terrain only display in front of the aircraft)

Question 19

(Flight Instruments and Displays) What does the STA button on the EFIS Control Panel display?

Answer 19

VOR Stations (if the MAP scale is set to 40nm or lower all VOR’s are displayed; however if the MAP scale is set to 80nm or greater only High Altitude VOR’s are displayed)

Question 20

(Flight Instruments and Displays) What does the WPT switch on the EFIS Control Panel display?

Answer 20

• 40nm or less - All waypoints in the FMC database, which are not in the flight plan route are displayed.

Question 21

(Flight Instruments and Displays) What does the ARPT switch on the EFIS Control Panel display?

Answer 21

All airports in the FMC database which are within the viewable map area are displayed.

Question 22

(Flight Instruments and Displays) What does the DATA switch on the EFIS Control Panel display?

Answer 22

• Displays each altitude constraint next to the associated waypoint.
• The ETA for each waypoint is also displayed.

Question 23

(Flight Instruments and Displays) What does the POS switch on the EFIS Control Panel display?

Answer 23

IRS and GPS positions.

Question 24

(Flight Instruments and Displays) You see an EFIS MODE/NAV FREQ DISAGREE on your MD and a RW/APP TUNE DISAGREE on your MCDU, what does this mean?

Answer 24

• That you have a VOR frequency, tuned with the EFIS Control Panel set to APP mode. or
• That you have an ILS frequency tuned with the EFIS Control Panel set to VOR Mode.

Question 25

(Flight Instruments and Displays) When does the Flight Recorder start recording?

Answer 25

When one of the two engines is operating (in the air, even if both engines shutdown, as long as there is electrical power it will keep recording).

Question 26

(Flight Instruments and Displays) What does it mean when the OFF light on the Flight Recorder Panel on the Overhead Panel is illuminated?

Answer 26

• Both Engines are OFF or

* There is a malfunction in the Flight Recorder

Question 27

(Flight Instruments and Displays) When does the Pitch Limit Indicator (PLI) display on the PFD?

Answer 27

• Flaps extended

* At slow speeds with the Flaps up