Flight Instruments, Displays

Question 1

Explain the function of the DISPLAYS CONTROL PANEL Select Switch.

Normal
Both on 1
Both on 2

Answer 1

NORMAL:
- Left EFIS control panel controls Capt’s displays. - Right EFIS control panel controls FO’s displays.

BOTH ON 1 or 2:
- Manually switches control of displays to a single EFIS control panel.

Note: When in the NORMAL position, a “DISPLAYS CONTROL PANEL” annunciation illuminates below the altitude indication showing a failure of the associated EFIS control panel.

Question 2

Describe the alert associated with a single DEU failure.

1

Answer 2

DSPLY SOURCE (amber) on the lower left corner of the PFD.

Note: If a DEU fails, the remaining DEU automatically supplies data to all six displays. A single DEU failure will continue to supply each pilot with flight instrument information from independent sources. If the displays are automatically or manually switched to a single DEU source, a “DSPLY SOURCE” annunciation illuminates on both PFDs below the Airspeed Indicator.

Question 3

Explain what the PLI indicates.

Answer 3

Indicates pitch limit (stick shaker activation for existing flight conditions).

Question 4

Locate on the PFD the MCP commands for altitude, airspeed, heading and V/S and their respective colors.

Answer 4

MCP commands are displayed in magenta on the top of the Altitude and Airspeed tapes, on the respective Compass and the Vertical Speed display.

Question 5

Explain the meaning of the red and black Max Speed Bar on the airspeed tape.

(3)

Answer 5

Bottom of the bar indicates the maximum speed as limited by the lowest of the following:

• Vmo/Mmo.
• landing gear placard speed.
• flap placard speed.

Question 6

Explain the meaning of the red and black Min Speed Bar on the airspeed tape.

Answer 6

Top of bar indicates the speed at which stick shaker occurs.

Question 7

Explain the meaning of the Speed Trend Vector.

Answer 7

Tip of green arrow indicates predicted airspeed in the next 10 seconds based on the current airspeed and acceleration or deceleration.

Question 8

Explain the meaning of the Maximum Maneuver Speed Bar (amber) when flaps are not up.

Answer 8

When flaps are not up, bottom of the bar indicates flap limit placard speed for the next normal flap setting. The display logic is based on a normal flap setting sequence of 1, 5, 15, 30. The bar is removed when the flap lever is moved to the landing flap selected on the APPROACH REF page or when the flap lever is moved to flaps 30 or 40.

Question 9

Explain the meaning of the Maximum Maneuver Speed Bar (amber) when flaps are up.

Answer 9

Bottom of the bar indicates the airspeed that provides a 1.3g maneuver margin to high speed buffet. May be displayed at high altitude with flaps up, at relatively high gross weights.

Question 10

Explain the meaning of the Minimum Maneuver Speed Bar (amber) with the flaps extended.

Answer 10

Top of bar indicates minimum maneuver speed.

Question 11

Recall the speed of the single white bug displayed during takeoff.

Answer 11

V2+15.

Note: The maneuver speed provides margin to stick shaker for an inadvertent 15 degree overshoot beyond the normal 25 degree angle of bank.

Question 12

Explain when the single white bug is displayed during approach.

Answer 12

Single white bug is displayed after selection of VREF in the FMC.

Question 13

Recall the speed of the single white bug during approach.

Answer 13

VREF +20.

Note: Displayed after selection of VREF. Indicates target airspeed in the event an engine is lost during approach.

Question 14

Describe the PFD Radio Altitude display.

3

Answer 14

Displays current radio altitude on the bottom center of the attitude indicator:

• displayed below 2500 feet AGL.
• box highlighted white for 10 seconds upon descent below 2500 feet.
• turns amber when below radio altitude minimums.

Question 15

Describe the Landing Altitude Indication (amber) at the bottom of the altitude tape.

(2)

Answer 15

• The cross hatched area indicates the FMC landing altitude for the destination runway or airport, or
• The altitude for departure runway or airport.

Question 16

Describe the PFD Vertical Speed Indications.

Vertical Speed Pointer
Selected Vertical Speed Bug
Vertical speed
TCAS Vertical Speed Tape

Answer 16

Vertical Speed Pointer (white) – Indicates current vertical speed.

Selected Vertical Speed Bug (magenta) – Indicates the speed selected in the MCP vertical speed window with V/S pitch mode engaged.

Vertical speed (white) – Displays vertical speed when greater than 400 feet per minute. The display is located above the vertical speed indication when climbing and below when descending.

TCAS Vertical Speed Tape (red) – Tape turns red to indicate vertical speed values to avoid or exit during a TCAS resolution advisory. Vertical speed pointer is also red if it is within the vertical speed tape range.

Question 17

Recall the location and purpose of the PFD Approach Reference indication.

(2)

Answer 17

• The Approach Reference indicator is displayed on the upper left-hand corner of the PFD.
• Displays the selected ILS/IAN identifier or frequency, approach front course, and ILS/DME/FMC distance and source annunciation.

Note: If the tuned ILS frequencies disagree, the frequency turns amber with an amber horizontal line through it. If the approach courses entered in the MCP disagree, the course turns amber with an amber horizontal line through it.

Question 18

Explain the indications of a Resolution Advisory (RA) and where they are displayed.

(4)

Answer 18

• Aural directions such as “CLIMB, CLIMB” or “DESCEND, DESCEND”.
• Intruder aircraft symbol turns red, displayed on the ND in MAP, center MAP or VOR and APP modes.
• Avoidance maneuver area displayed in red on PFD.
• TCAS Vertical Speed Tape turns red to indicate vertical speed values to avoid or exit during a TCAS resolution advisory. Vertical speed pointer is red if it is within the vertical speed tape range.

Question 19

Describe the slip/skid indicator.

2

Answer 19

Displaces beneath the bank pointer to indicate slip or skid:

• fills white at full scale deflection.
• turns amber if bank angle is 35 degrees or more; fills amber if the slip/skid indication is also at full scale deflection.

Question 20

Locate actual aircraft heading on the PFD and ND.

Answer 20

PFD – actual aircraft heading is under the white (inverted triangle) current heading pointer on the compass rose.

ND - actual aircraft heading is under the white (inverted triangle) current heading pointer on the outer edge of the compass rose (not in PLAN mode).

Question 21

Describe where groundspeed and true airspeed are displayed.

Answer 21

Top left of ND when the EFIS selector is in the MAP, VOR, APP and PLAN modes.

Question 22

Describe where wind direction and speed is displayed.

Answer 22

Top left of ND below GS / TAS.

Question 23

Describe TCAS traffic displays and symbols.

Answer 23

TCAS Traffic Symbols – Indicates position of traffic targets. Displayed in MAP, center MAP, VOR and APP modes with TFC selected on the EFIS control panel.

Red Square – TCAS Resolution Advisory (RA).

Amber Circle – TCAS Traffic Advisory (TA).

White Diamond – TCAS Proximate traffic.

Arrow – Traffic climbing or descending at a rate greater than or equal to 500 fpm.

TRAFFIC – Displayed on the ND whenever a TCAS RA or TA is active, whether or not TFC is selected on the EFIS Control Panel.

OFFSCALE – Displayed whenever RA or TA traffic is outside ND range.

Question 24

Explain what the Altitude Range Arc indicates during a climb or descent.

Answer 24

Based on vertical speed and groundspeed, indicates the approximate map position where the MCP altitude will be reached.

Question 25

Show where the Active Waypoint/ETA/Distance-To-Go are displayed on the ND (Navigation Display).

Answer 25

The Active Waypoint/ETA/Distance-To-Go are displayed in the MAP and PLAN modes on the top right corner of the ND.

Question 26

Explain how approach minimums are set on the EFIS Control Panel.

Answer 26

Minimums (MINS) Reference Selector (outer - two position)
RADIO – selects radio altitude as the minimums reference.
BARO – selects barometric altitude as the minimums reference.

Minimums (MINS) Selector (middle - slew)
ROTATE – adjusts the radio or baro minimums altitude.

Minimums (MINS) Reset (RST) Switch (inner - momentary action)
PUSH –
- resets the alert minimums annunciation.
- blanks minimums display if alert is not active

Question 27

Explain the function of the EFIS Control Panel Mode Selector (outer and center)

APP

VOR

MAP

PLN

CTR

Answer 27

Mode Selector (outer) Selects the desired display.

APP –

• displays localizer and glideslope information in heading–up format
• displays reference ILS receiver, ILS frequency or identification, course and DME (weather radar and TCAS are not displayed in center APP mode)

VOR –

• displays VOR navigation information in heading–up format
• displays reference VOR receiver, VOR frequency or identification, course, DME and TO/FROM information (weather radar and TCAS are not displayed in center VOR mode)

MAP –

• displays FMC generated route and MAP information, airplane position, heading and track, in a track–up format
• displays waypoints, including the active waypoint, within the selected range
• displays VNAV path deviation.

PLN –

• displays a non–moving, true north up, route depiction
• the airplane symbol represents actual airplane position and orientation
• allows route step–through using the CDU LEGS page (weather radar and TCAS are not displayed)

Center (CTR) Switch (inner)
PUSH –
- displays full compass rose (center) for APP, VOR & MAP modes.
- subsequent pushes alternate between center with VSD, expanded and center without VSD.

Question 28

Recall how to select STD for the altimeters when passing through the transition level.

Answer 28

Push- STD located in the BARO selector knob on the EFIS control panel.

Question 29

Explain the heading orientation if the PLAN mode is selected on the EFIS control panel.

Answer 29

True north up.

Question 30

Explain how the map scale differs when in the center map mode.

Answer 30

Aircraft symbol is located in the center of the ND. The full compass rose is displayed for APP, VOR, and MAP modes. Subsequent pushes of the CTR switch alternate between map, center map, and center map with VSD.

Question 31

Recall what is displayed with each of the EFIS Control Panel MAP Switches.

WXR STA WPT ARPT DATA POS TERR

Answer 31

WXR (weather radar) – Energizes weather Radar Transmitter and Displays weather radar returns in MAP, center MAP, VOR and APP modes.

STA (station) – displays FMC data base navigation aids.

WPT (waypoint) – displays the waypoints in the FMC data base which are not in the flight plan route if the selected range is 40 nm or less.

ARPT (airport) – displays all airports which are stored in the FMC data base within the viewable map area.

DATA – displays altitude constraints, and estimated time of arrival for each active route waypoint.

POS (position) – displays IRS positions, GPS positions and VOR bearing vectors extended from the nose of the airplane symbol to manually tuned stations.

TERR (terrain) – displays GPWS generated terrain data in MAP, center MAP, VOR, and APP modes.

Question 32

Recall what advisory message is annunciated if in the EFIS APP mode with a VOR tuned.

Answer 32

• EFIS MODE / NAV FREQ DISAGREE

Question 33

Describe the PFD flags displayed for inoperative flight instruments.

Answer 33

Boxed amber alerts replace failed flight instrument.

Question 34

Recall what indications will be displayed to indicate excessive glide slope and localizer deviation on the PFD.

Answer 34

At low radio altitudes (with autopilot engaged), the appropriate scale turns amber and the pointer flashes to indicate excessive glide slope or localizer deviation.

Question 35

Recall the location and purpose of the PFD Scale ID Annunciation.

(2)

Answer 35

• displayed above the left corner of ADI.

- indicates the source of displayed deviation for each scale.

Question 36

Recall the PFD Navigation Performance Scales (NPS) Indications.

NPS Deviation Scale
Anticipation Cues
NPS Pointer
Actual Navigation Performance (ANP) Bars

Answer 36

NPS Deviation Scale

• lateral NPS deviation scale represents the current FMC lateral RNP.
• vertical NPS deviation scale represents the current FMC vertical RNP.

Anticipation Cues

• displayed if valid approach course deviation information is being received while corresponding NPS deviation scale and pointer are displayed.
• unfilled white diamond symbol.

NPS Pointer

• filled magenta pointer symbol when it is not parked at deflection limit.
• unfilled pointer symbol outline when at deflection limit.
• indicates lateral/vertical paths relative to the airplane.
• will flash for 10 seconds if the deviation is within ANP bar limits for 10( 5 secs vol 2) continuous seconds.

Actual Navigation Performance (ANP) Bars

• originate from the outer scale and expand inward as a function of increasing ANP relative to RNP.
• will just touch at the center of scale when ANP equals RNP.
• turn from white to amber if the current deviation is within the ANP bar limits for 10 ( 5 secs vol 2) continuous seconds.

Question 37

Recall the location and method of displaying the Vertical Situation Display.

Answer 37

The VSD is accessed by pressing the EFIS Control Panel Center (CTR) switch twice, and is displayed on the ND. The VSD represents a profile view of the airplane and its environment along the current track. Information shown within the cyan dashed lines (enroute corridor/swath) on the ND is shown in profile on the VSD.

Question 38

Recall the purpose of the Vertical Situation display (VSD) Terrain Profile Line.

(3)

Answer 38

Represents the highest terrain within the enroute swath.

• highest points of the terrain below and ahead of the airplane.
• terrain is depicted so the true altitude separation between the airplane and terrain is shown.
• VSD terrain uses the same color coding that is used to depict EGPWS terrain on the lateral map

Question 39

Recall the function of the VOR Switch on the EFIS panel.

VOR
OFF

Answer 39

Displays VOR information on all navigation modes except PLAN.

VOR – displays the selected VOR bearing pointer, frequency or identification and DME.

OFF – removes the VOR displays.

Question 40

Explain the function of the DISPLAYS SOURCE selector.

Auto
All on 1
All on 2

Answer 40

AUTO:

• DEU 1 controls the Captain’s outboard, Captain’s inboard and upper display units.
• DEU 2 controls the First Officer’s outboard, First Officer’s inboard, and Lower Display units.
• When a DEU fails, the other DEU controls all display units.

ALL ON 1 or 2: (Used on the ground for maintenance purposes)
- Manually switches all display units to a single DEU.