B737 Flight Instruments, Displays

Front 1

What does the Speed Trend Vector do?

Back 1

It shows the predicted speed in 10 seconds.

Front 2

What type of airspeed does the Current Airspeed show?

Back 2

Calibrated airspeed in knots.

Front 3

What happens if the Current Airspeed goes into the Minimum Maneuver Speed amber bar?

Back 3

-Airspeed readout box turns amber and flashes for ten seconds. -An aural "Airspeed Low, Airspeed Low" sounds once.

Front 4

What does the Maximum Maneuver Speed/High Speed Buffet amber bar indicate?

Back 4

Up to that speed, full maneuvering capability exists to high speed buffet.

Front 5

What is Bug 5?

Back 5

It is an extra speed bug that is manually set through the Speed Reference Selector if desired.

Front 6

What does an amber SPD LIM flag mean?

Back 6

Displays related to stick shaker or maximum operating speed have failed (no red and black tapes).

Front 7

What does and amber PITCH and/or ROLL indicate?

Back 7

Comparator annunciation, pitch and/or roll between CA and FO differ by more than 5 degrees

Front 8

What does an amber LDG ALT flag indicate?

Back 8

The landing altitude input is not available or invalid.

Front 9

What are the possible Display System Annunciations?

Back 9

CDS MAINT, CDS FAULT, or DSPLY SOURCE.

Front 10

What is CDS MAINT?

Back 10

A white flag that indicates a dispatchable CDS fault (minor DEU problem) has occurred. Displayed on the ground only, prior to the start of the second engine.

Front 11

What is CDS FAULT?

Back 11

An amber flag indicating a non-dispatchable CDS fault (DEU failure). Displayed on the ground only, prior to the start of the second engine.

Front 12

What is DSPLY SOURCE?

Back 12

The CDS has automatically switched to a single DEU (a DEU has failed) or has manually been switched to a single DEU via the DISPLAYS SOURCE panel.

Front 13

What happens when you get DSPLY SOURCE above FL220?

Back 13

Autopilot and flight directors are not affected.

Hint 13

What happens when you get DSPLY SOURCE during climb or descent below FL220 with the failed side autopilot engaged?

Front 14

What happens when you get DSPLY SOURCE during level flight below FL220 with the failed side autopilot engaged?

Back 14

Climb or descent to a new altitude only possible in CWS P.

Front 15

What happens when you get DSPLY SOURCE during approach mode above 400 ft with both flight directors on?

Back 15

On the failed side, pitch and roll command bars are removed.

Front 16

What is DISPLAYS CONTROL PANEL?

Back 16

An amber indication that means the EFIS control panel is failed on the affected side.

Front 17

What else would you see associated with the DISPLAYS CONTROL PANEL?

Back 17

The altitude information is removed on the affected side.

Front 18

What is INSTR SWITCH?

Back 18

An amber indication displayed when the IRS switch on the overhead panel is not in the NORMAL position. Indicates both displays are using the same source of IRU data.

Front 19

What does an unfilled Range to Target Speed Dot (RTSD) indicate?

Back 19

The target speed will not be reached by the end of the Vertical Flight Path Vector Line.

Front 20

How many DEU's are needed to drive all DU's?

Back 20

At least one

Front 21

What does the AUTO position of the Displays Source Selector do?

Back 21

Allows DEU 1 to drive CA outboard, CA inboard, and Upper DU; DEU 2 to drive FO outboard, FO inboard, and lower DU. Provides automatic switching in case of single DEU failure.

Front 22

What happens when the MAIN PANEL DUs selector is on OUTBD PFD?

Back 22

Outboard DU is PFD, inboard is blank.

Front 23

What happens when the MAIN PANEL DUs selector is on INBD ENG PRI?

Back 23

Displays primary engine instruments on the inboard DU and PFD on the outboard DU

Front 24

What happens when the MAIN PANEL DUs selector is on INBD PFD?

Back 24

Displays PFD on the inboard DU and blanks the outboard DU

Front 25

What happens when the MAIN PANEL DUs selector is on INBD MFD?

Back 25

Displays MFD SYS or ENG when selected. Blank otherwise. PFD is on the outboard DU

Front 26

What does the Flight Recorder Test Switch in NORMAL do?

Back 26

-In flight, recorder operates anytime electrical power is available. -On ground, recorder operates when electrical power is available and either engine is running

Front 27

What does the Flight Recorder Test Switch in TEST do?

Back 27

Powers the flight recorder on the ground

Front 28

What does the Flight Recorder OFF light indicate?

Back 28

Indicates recorder is not operating or that the test is invalid.

Front 29

When on a single DEU, are the flight instrument indications redundant?

Back 29

Yes, each DEU receives information from both ADIRU's.

Front 30

Would you use the DISPLAYS SOURCE selector in flight?

Back 30

No, it's for maintenance purpose on the ground.

Front 31

What happens if a DU fails?

Back 31

Automatic switching should occur.

Front 32

What is the purpose of the Display Select Panels?

Back 32

To allow for manual switching if a failure goes undetected.

Front 33

What are the major components of the Air Data Inertial Reference System(ADIRS)?

Back 33

-2 Air Data Inertial Reference Units, -4 Air Data Modules, -1 Inertial System Display Unit, -1 dual Mode Select Unit, -6 Static Ports, -3 Pitot Probes, -2 Alpha Vanes, -1 Total Air Temperature Probe.

Front 34

What is the function of the ADIRU's?

Back 34

They process information from internal gyros and accelerometer's, the ADM's, the Alpha Vanes, and the TAT probe and send it to the FMC and DU's.

Front 35

What is the function of the ADM's?

Back 35

They convert pneumatic pressure into electronic signals and send it to the ADIRU's.

Front 36

What are the ADM's attached to and to which ADIRU's do they send information?

Back 36

The CA and FO pitot probes and static ports each has its own ADM which sends its information to its respective side ADIRU(no cross connection).

Front 37

What are the Standby Flight Instruments?

Back 37

The magnetic compass and the Integrated Standby Flight Display.

Front 38

What are the information sources for the ISFD?

Back 38

-Attitude: internal inertial sensors. -Airspeed and Altitude: pneumatic pressure data directly from the auxiliary Pitot Probe and alternate Static Ports. -Magnetic Heading: #1 ADIRU. -Localizer/Glideslope: #1 Multi Mode Receiver.

Front 39

Which bus powers the ISFD?

Back 39

The battery bus.

Front 40

Describe the initialization process for the ISFD.

Back 40

10 seconds after the battery switch is placed ON, the ISFD goes through a 90 sec initialization. ATT and INIT 90s are displayed. Initialization stops if excessive motion is sensed, then resumes when it stops. Attitude information will be displayed when initialization is complete.

Front 41

What does an amber ATT:RST indicate?

Back 41

Caused by an out of limit ISFD condition. ISFD must be reset using the attitude reset switch. Also indicates the initialization process did not finish within 6 minutes.

Front 42

What does an amber WAIT ATT indicate?

Back 42

Temporary, self correcting loss of attitude information.

Front 43

What does an amber ATT 10s indicate?

Back 43

Displayed after the attitude reset switch is pressed. 10 sec attitude realignment in process.

Front 44

What does the Altitude Reset Switch do?

Back 44

Press and hold for 2 seconds: -Aligns horizon with the airplane symbol, -Takes about 10 seconds (in air), -On ground, starts new initialization sequence if previous attempt failed.