14.48 EFIS Instrument Displays

14.48.2 Describe the function and operation of a typical EFIS cockpit display system.

EFIS (Electronic Flight Instrument System)

Function:

• Replaces traditional instruments with electronic displays
• Provides integrated flight, navigation, and system information

Operation:

• Receives data from sensors and avionics (pitot-static, gyros, GNSS, etc.)
• Processes and displays information on screens such as:
  • Primary Flight Display (PFD): attitude, airspeed, altitude, heading
  • Multi-Function Display (MFD): navigation, maps, weather, traffic
• Displays are configurable and combine multiple data sources into a clear format

Summary:
EFIS integrates data from aircraft systems and presents it on electronic displays, improving situational awareness and ease of interpretation.

14.48.4 Describe the function of the:

(a) air data computer;

Function:

• Processes data from the pitot-static system and temperature sensors
• Calculates key air data parameters

Outputs include:

• Airspeed (IAS/TAS)
• Altitude
• Vertical speed
• Outside Air Temperature (OAT)