Avionics Systems Flashcards
7 cards from real AET practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Avionics Systems flashcards as text
What does the term 'EFIS' stand for in modern avionics?
Answer: Electronic Flight Instrument System
EFIS stands for Electronic Flight Instrument System, replacing traditional electromechanical gauges with digital displays.
Which bus architecture is commonly used in modern commercial aircraft for avionics data communication?
Answer: ARINC 429
ARINC 429 is the standard data bus used in commercial aviation for unidirectional communication between avionics systems.
What is the primary function of a Traffic Collision Avoidance System (TCAS)?
Answer: Issue resolution advisories to avoid mid-air collisions
TCAS interrogates transponders of nearby aircraft and issues resolution advisories (RAs) to pilots to prevent mid-air collisions.
In an Inertial Reference System (IRS), what sensors are used to measure angular rate?
Answer: Ring laser gyroscopes or fiber optic gyroscopes
Modern IRS units use ring laser gyroscopes (RLGs) or fiber optic gyroscopes (FOGs) to measure angular rate without moving parts.
What frequency band does the ILS localizer transmit on?
Answer: 108–112 MHz VHF
The ILS localizer transmits between 108 and 112 MHz in the VHF band, providing lateral guidance to the runway centerline.
Which avionics component converts analog sensor signals to digital format for processing by the flight management computer?
Answer: Analog-to-Digital Converter (ADC)
An Analog-to-Digital Converter (ADC) translates analog sensor voltages into digital data that avionics computers can process.
What does a Weather Radar system use to detect precipitation intensity?
Answer: Reflected radio wave energy (return power)
Weather radar measures the power of reflected radio waves; heavier precipitation returns stronger signals, color-coded on the display.