Flight Instruments and Displays

Question 1

If both Capt and FO pitot tubes are inoperative (damaged/blocked), how is airspeed provided?

Answer 1

Standby airspeed indicator

Question 2

What directly provides inertial position and track data to the associated FMC?

Answer 2

ADIRUs - Air Data Inertial Reference Units

Question 3

Failure flags are used to display system failures on which displays?

Answer 3

PFD’s, NDs, ISFDs

Question 4

What indicates maximum operating speed?

Answer 4

Top red barber pole

Question 5

Pushing STD on the EFIS control panel does what?

Answer 5

Sets standard baro 29.92

Question 6

Flight path angle is available on the PFD through use of what? How is it toggled ON/OFF?

Answer 6

Flight Path Vector (FPV) Indication via the FPV switch on the EFIS control panel.

Question 7

The location of the PFD, ND, and Engine Instrument displays may be moved using switches on what panel?

Answer 7

Display Select Panel

Question 8

What are the standby instruments?

Answer 8

Magnetic compass Standby attitude indicator
ISFD
Standby altimeter and airspeed indicator
Standby RMI

Question 9

What is the difference between the two CDS lights on the PFD and when would you see them?

Answer 9

CDS MAINT (white) = dispatchable (circuit card failed in either DEU) 
CDS FAULT (amber) = Non-dispatchable (total DEU failure, two or more cards fail, or one card fails in each DEU) 
You would see them on the ground prior to the 2nd engine start

Question 10

Can the Integrated Standby Flight Display operate separate from the electrical system?

Answer 10

Yes. The Battery Pack provides power to the ISFD when power from the Battery Bus is not available.

Question 11

If the outboard display fails, is automatic switching available? If so, where is the PFD displayed?

Answer 11

Yes - displayed on the inboard display unit

Question 12

How are maneuver speeds indicated?

Answer 12

Amber band —— = Guarantees 15° of bank before buffet
Between upper and lower amber band - Guarantees 40° of bank before buffet
Maximum Maneuvering speeds: bottom of amber band with flaps up Minimum Maneuvering speeds: top of amber band

Question 13

How are airspeeds bugged if the FMCs are INOP?

Answer 13

The SPD REF Selector (Outer Knob)

Question 14

When do the Pitch Limit Indicators populate?

Answer 14

When flaps are extended, OR

High AOA, approaching stick shaker

Question 15

The Expanded Localizer Scale is used to clue a pilot to localizer deviation. What parameters cause the expanded scale to populate?

Answer 15

1. Autopilot or FD is in LOC mode
2. Deviation is slightly more than one half dot, and
3. Track is within 5 degrees of the MCP-selected course

Question 16

What is the logic of the Landing Altitude Indication (amber) on the PFD?

Answer 16

Indicates the airport elevation at departure point until 400nm or halfway to your destination

Question 17

Using the VSD, how would you know that you will achieve a target speed within a certain distance?

Answer 17

A green dot indicates where the aircraft will achieve the FMC or MCP target speed at point shown on VSD. “range to target speed indicator”

Open circle means you won’t reach target speed

Question 18

On the VSD, gates are provided at altitudes along an approach path?

Answer 18

500ft (amber) and 1000ft (white) above touchdown zone elevation

Question 19

What causes the Altitude Disagree Alert, and where is it annunciated?

Answer 19

CAs & FOs altitude indications disagree by more than 200ft for more than 5 continuous seconds. ALT DISAGREE (amber) will display on both PFDs

Question 20

What causes the airspeed Disagree Alert and where is it populated?

Answer 20

CAs & FOs airspeed indications disagree by more than 5 kts for 5 continuous seconds. IAS DISAGREE (amber) will display on both PFDs airspeed tape.

Question 21

AOA integrity is monitored by comparing left and right AOA values. How much disagree causes a disagree alert?

Answer 21

More than 10 degrees for more than 10 continuous seconds. AOA DISAGREE (amber) will display on both PFDs.

Question 22

What is indicated by terrain colors on the vertical situation display?

Answer 22

Green. Terrain is more than 500 feet below (250 with gear down)
Amber. Terrain from 500 feet below (250 gear down). to 2000 above the aircraft
Red. Terrain more than 2000 feet above the aircraft.

Question 23

How is plan mode oriented

Answer 23

True north up