EFIS Flashcards
What is the purpose of EFIS?
Provides color displays of pitch, roll, radio altitude, decision height, navigation maps, weather maps, flight path information and autopilot.
Electronic Flight Instrument System (EFIS) consists of:
-EFIS Control Panel
-Captain’s Primary Flight and Navigational Displays
-First Officer’s Primary Flight and Navigational Displays
The EFIS is composed of three subsystems:
The Pilot Display System (PDS)
The Copilot Display System (CDS)
The Weather Radar System (WX)
Weather information is typically overlaid on what?
The Navigational Display (ND)
The Symbol Generator (SG) processes what?
processes the data and sends it to the proper display
EFIS cannot display what?
engine parameters or airframe systems information
In the event one of the color guns fails, the display will revert to:
a monochrome mode/display
Pin programming is used to:
“indicate” what position the display is being used in
If a system that feeds the EFIS fails, that data will be:
removed from the display and the appropriate fault flag will appear.
Both symbol generators (SGs) are identical and can be swapped for maintenance or troubleshooting purposes. True or false?
True
If the 2nd over-temperature threshold is reached, the SGs will:
turn off both raster and stroke signals, the display will now go blank.
The stroke signal provides what?
the signals to generate lines and characters, such as arrows, letters, and numbers
SG #1 drives the:
left side (pilot)
SG #2 drives the:
right side (first officer)
In the event of either a SG #1 or SG #2 failure:
the remaining/working Symbol Generator can drive all four (4) EFIS displays.
What side are the controls for the EADI on?
on the left
What side are the EHSI controls on?
right side
The five (5) map buttons on the lower right of the panel determines what?
the map mode of the EHSI.
The BITE information is accessed through what?
the right or left control display unit (CDU).
In-flight faults occur whenever:
the aircraft is airborne
Current status is used to what?
test the various components of the EFIS and related interfaces
During a “processor circuitry failure”, a message will be generated and will cause a:
“SG FAIL” and an “X” will be displayed on the EADI/EHSI.
2nd Generation EFIS: The new EFIS allowed for what?
better flight deck management, improved reliability and maintainability.
What are the main processing units for the IDS?
Three electronic interface units (EIUs) ensuring redundancy
