Avionics, Flight Instruments Flashcards
How should we contact the flight attendant in an emergency?
Turn the audio panel selector knob to PA, push the EMER
call switchlight to generate three high/low chimes and a flashing
Red light on the FA’s overhead panel
What indication do we get if the FA is calling the flight deck because of an emergency in the cabin?
We hear one high/low chime and the EMER call switchlight
will be flashing
How do we know if the company is trying to contact us?
An ACARS message or “SELCAL, SELCAL” voice aural and a SELCAL advisory EICAS message
How many air data computers (ADC) are installed?
Two
How many AHRS or IRS computers are installed ?
Two
In MAG mode, how long does it take the AHRS system to initialize ?
30 to 70 seconds
In DG mode, how long does it take the AHRS system to initialize?
10 to 11 minutes
Will the flight deck PA override the flight attendant PA?
Yes
From which source do the captain’s flight instruments receive AHRS information?
AHRS 1 or IRS 1
From which source do the first officer’s flight instruments receive AHRS information?
AHRS 2 or IRS 2
From which source do the captain’s flight instruments receive pitot/static information?
System #1, pitot/static tube on left side of nose
From which source do the FO’s flight instruments receive pitot/static information?
System #2, pitot/static tube on right side of nose
From which source does the integrated standby instrument receive pitot/static information?
System #3, standby pitot under the captain’s side window and two alternate static ports, one on left and one on the right side
Where is the TAT probe located ?
Under FO’s side window
What is the definition of Total Air Temperature?
The temperature of the air corrected for compressibility and friction caused by high speed
On the ground with the probe heat ON, which probes are heated?
Everything EXCEPT: TAT and pitot bases; the pitot heads are heated but only half of their normal heat
In flight, which probes are heated?
All are fully heated regardless of probe heat switch position.
Is there a LOC and GS indication on the standby altitude indicator?
Yes, referencing NAV 1
When and where will the radio altitude information appear?
0-2500’ AGL indicated in green below the altitude tape
What does the speed trend vector indicate?
Predicted airspeed in 10 seconds if no changes are made
When and where will the MACH readout appear?
Appears when accelerating through .45 Mach. Disappears when decelerating through .4 Mach. Appears just above the airspeed tape in white.
What does the green line on the airspeed take indicate?
1.27 Vs based on current configuration. Not accurate at high altitudes.
Where is the slip and skid indicator located?
A rectangle located just under the sky pointer
How many flight directors are installed?
Two
