AET Instrument Systems

Question 1

What does an Air Data Computer (ADC) primarily compute?

Accepted Answer

Airspeed, altitude, vertical speed, and Mach number from pitot-static data

Answer

An ADC processes pitot and static pressure inputs to compute calibrated airspeed, altitude, vertical speed, Mach number, and outside air temperature.

Question 2

What type of sensor is used to measure outside air temperature (OAT) in avionics systems?

Accepted Answer

Platinum resistance thermometer (PRT/TAT probe)

Answer

Aviation OAT/TAT probes typically use platinum resistance thermometers (PRTs), which provide accurate temperature measurement based on resistance change.

Question 3

What is the function of an Inertial Reference System (IRS)?

Accepted Answer

Measure and integrate accelerations to determine attitude, heading, and position

Answer

An IRS uses accelerometers and gyroscopes (or ring laser gyros) to measure motion and compute aircraft attitude, heading, velocity, and position without external references.

Question 4

Which instrument displays a combination of attitude, heading, and navigation information on a single screen?

Accepted Answer

EFIS/PFD (Primary Flight Display)

Answer

A Primary Flight Display (PFD) on an EFIS-equipped aircraft combines attitude, airspeed, altitude, heading, and navigation data on one integrated screen.

Question 5

What does RVSM stand for and why is accurate altimetry critical for it?

Accepted Answer

Reduced Vertical Separation Minima — aircraft must maintain altitude within ±60 ft

Answer

RVSM (Reduced Vertical Separation Minima) reduces vertical separation to 1,000 ft between FL290–FL410, requiring altimetry accuracy within ±60 ft to prevent conflicts.

AET - Avionics Electronic Technicians Practice Test

AET - Avionics Electronic Technicians Practice Test

AET Instrument Systems