Flight Instruments And Displays

Question 1

What is the significance of the small white bug
on the PFD Airspeed Indicator during takeoff?
Approach?

Answer 1

Takeoff = V2 + 15

Approach = -700: Vref+15
-800/8MAX: Vref+20

Question 2

On takeoff, what is the minimum speed for flap
retraction?

Answer 2

Normally, the initial flap retraction will be made at V2 + 20. V2 + 15 is the minimum speed required for flap retraction except for a Flaps 1 takeoff. For a flaps 1 takeoff, begin flap retraction when reaching the flaps 1 maneuvering speed.

Limit bank angle to 15 degrees until reaching V2 +
15.

Question 3

What does IAS DISAGREE alert indicate?

Answer 3

The Captain’s and First Officer’s airspeed
indications disagree by more than 5 kt for 5
continuous seconds

Question 4

In an NG, what is the difference between a
CDS MAINT alert and a CDS FAULT alert?

Answer 4

CDS MAINT (white)— A dispatchable CDS fault
has occurred.

CDS FAULT (amber)— A non-dispatchable CDS
fault has occurred.

Question 5

What does a (NG) DSPLY SOURCE/ (MAX)
DSPLY SOURCE 1 alert and the illumination of both
EEC ALTN lights indicate which QRH Checklist
should be used?

Answer 5

A DEU (NG) or DPC(MAX) has failed. Loss of the
DEU/DPC results in a loss of signal to both EECs.
The EEC ALTN lights illuminate, and each EEC
reverts to the alternate mode. The root cause loss of
a DEU would lead to the selection of the DISPLAY
SOURCE QRH checklist but either the DISPLAY
SOURCE checklist or the EEC ALTERNATE MODE
checklist will address the situation

Question 6

During flight below FL220 you observe a
DSPLY SOURCE message on the primary flight
display. Will the autopilot and/or flight director be
affected?

Answer 6

Yes, below FL220 available autopilot modes and flight director commands will be affected depending on phase of flight and which autopilot is engaged

Question 7

When VNAV is engaged when will VNAV
automatically switch from VNAV PTH to VNAV SPD?

Answer 7

When the airspeed exceeds the top of the VNAV
Speed Band.

Question 8

What does the lower limit of the VNAV Speed
Band in the PFD trigger?

Answer 8

Lower limit will trigger autothrottle wakeup.

Question 9

After performing the Immediate Action Steps,
QRC, and QRH for an Airspeed Unreliable, what
resource would you go to that can help determine
your pitch and thrust settings as you continue with the flight?

Answer 9

Refer to the Flight with Unreliable Airspeed table in
the Performance Inflight chapter of the QRH