FLT Instruments and Displays Flashcards
If both Capt and FO pitot tubes are inoperative (damaged/blocked), how is airspeed provided?
Directly Via Stby Pitot probe to Stby ASI or ISFD
What directly provides inertial position and track data to the associated FMC?
ADIRU
Failure flags are used to display system failures on which displays?
PFD, ND, ISFD (Stby Inst)
What indicates maximum operating speed?
Bottom of the upper barber pole
Pushing STD on the EFIS control panel does what?
Sets baro ref to 29.92
Flight path angle is available on the PFD through use of what?
FPV EFIS CTRL panel Switch
The location of the PFD, ND, and Engine Instrument displays may be moved using switches on what panel?
Display Select Panel
What are the standby instruments?
ISFD, or Stby AI, ASI, ALT, RMI, Compass
What is the difference in the two CDS lights on the PFD and when would you see them?
White : Dispatchable, Amber not, On gnd before 2nd Eng start
. Can the Integrated Standby Flight Display operate separate from the electrical system?
Yes
. If the outboard display fails, is automatic switching available? If so, where is the PFD displayed?
Yes, goes to Inboard DU
How are maneuver speeds indicated?
Top of lower amber band, bottom of upper amber band on Airspeed tape
How are airspeeds bugged if the FMCs are INOP?
Use Speed Ref knob on ENG DISPLAY CTRL panel
When do the Pitch Limit Indicators populate?
When Flaps Extended or clean at low speeds
The Expanded Localizer Scale is used to clue a pilot to localizer deviation. What parameters cause the expanded
scale to populate?
AP/FD in LOC mode, deviation slightly more than ½ dot, Track <5 degrees of MCP selected course
What is the logic of the Landing Altitude Indication (amber) on the PFD?
Shows Departure Rwy alt until half way or at 400nm, then shows ldg runway alt.
Using the VSD, how would you know that you will achieve a target speed within a certain distance?
Range to target speed indicator
On the VSD, gates are provided at altitudes along an approach path?
1000, 500ft AGL
What causes the Altitude Disagree Alert, and where is it annunciated?
CAs & FOs alt > 200ft for more than 5 seconds. ALT DISAGREE (amber) will display on both PFD’s
altitude tape.
What causes the airspeed Disagree Alert and where is it populated?
CAs & FOs airspeed > than 5 kts for 5 continuous seconds. IAS DISAGREE (amber) will display on both
PFDs airspeed tape
. AOA integrity is monitored by comparing left and right AOA values. How much disagree causes a disagree alert?
More than 10 degrees for more than 10 continuous seconds
