AME - Aircraft Maintenance Engineer Digital Avionics and Instruments Questions and Answers

Question 1

A pilot reports an intermittent 'red X' over the airspeed tape on their Primary Flight Display (PFD). From a maintenance perspective, which system is the most likely source of this failure?

Accepted Answer

The Air Data Computer (ADC)

Answer

The Attitude and Heading Reference System (AHRS)

Answer

The Flight Management System (FMS)

Answer

The display unit's internal symbol generator

Question 2

Which of the following digital data bus standards is characterized by a unidirectional, twisted-pair wire connection that transmits 32-bit words at either a low speed (12.5 kbps) or a high speed (100 kbps)?

Accepted Answer

ARINC 429

Answer

MIL-STD-1553

Answer

ARINC 664 (AFDX)

Answer

CAN bus

Question 3

Which of the following best describes the primary function of an Attitude and Heading Reference System (AHRS)?

Accepted Answer

To provide aircraft attitude (pitch, roll) and heading information to the flight displays.

Answer

To calculate optimal flight paths and fuel consumption.

Answer

To monitor engine parameters and alert the crew to system malfunctions.

Answer

To provide long-range navigation data using GPS and inertial sensors.

Question 4

On an aircraft equipped with an Engine Indicating and Crew Alerting System (EICAS), a 'HYD QTY LOW' message appears in amber. What does this color typically signify?

Accepted Answer

A caution requiring immediate crew awareness and possible future action.

Answer

A warning requiring immediate and urgent crew action.

Answer

An advisory message indicating a system's status.

Answer

A failure of the EICAS display unit itself.

Question 5

In a modern Flight Management System (FMS), what is the primary source of real-time, high-accuracy position information used to continuously update and correct the aircraft's calculated position?

Accepted Answer

Global Positioning System (GPS)

Answer

VOR/DME radio navigation inputs

Answer

Air Data Computer (ADC) calculations

Answer

Inertial Reference System (IRS) free-inertial calculation

Question 6

An AME is performing a functional test of a TCAS II system. The test set simulates a conflict that generates a 'Climb, Climb' aural alert and a corresponding visual command on the PFD. What type of advisory has been generated?

Accepted Answer

Resolution Advisory (RA)

Answer

Traffic Advisory (TA)

Answer

Proximity Advisory (PA)

Answer

System Test Advisory (STA)

A pilot reports an intermittent 'red X' over the airspeed tape on their Primary Flight Display (PFD).From a maintenance perspective, which system is the most likely source of this failure?

A pilot reports an intermittent 'red X' over the airspeed tape on their Primary Flight Display (PFD).
From a maintenance perspective, which system is the most likely source of this failure?