As in the case of conventional flight instrument systems, a complete EFIS installation is made up of left (Captain) and right (First Officer) systems.  Each system comprises the following flight deck items:

 

1. EFIS Symbol Generator (SG)

2. Electronic Attitude Director Indicator/Primary Flight Display (EADI/PFD).

3. Electronic Horizontal Situation Indicator/Navigation Display (EHSI/ND).

4. Display/EFIS Control Panel.

5. Remote Light Sensor.

 

The EADI and EHSI can be positioned side by side or vertically top and bottom, with the Combined Speed Indicator (CSI), Radio Magnetic Indicator (RMI), Altimeter and Vertical Speed Indicator (VSI) positioned around the displays.  Normally the EADI is positioned on the top or on the on-side position. PFD and ND typically side by side with the PFD using the outboard display.


Figure 5 upper shows a flight deck layout of an ATR-72 using EADI/EHSI.  The lower figure shows the layout of PFD and ND of an Airbus A320.

EFIS Layout

Figure 5

Last modified: Saturday, 28 October 2017, 2:45 PM