AET Maintenance Procedures and Safety 2

Question 1

When working on aircraft avionics in a confined space, what is the FIRST action a technician should take before beginning work?

Accepted Answer

Verify adequate ventilation and identify all exit routes

Answer

Before entering any confined space, technicians must confirm adequate ventilation and identify all exit routes as a primary safety measure.

Question 2

Which document authorizes the return of an aircraft to service after avionics maintenance under FAA regulations?

Accepted Answer

Maintenance Release signed in the aircraft logbook by a certificated A&P or IA

Answer

A certificated A&P or IA must sign the aircraft maintenance record (logbook) to authorize return to service after maintenance.

Question 3

What is the purpose of a bonding jumper installed between an avionics component and the aircraft structure?

Accepted Answer

To ensure equipotential ground and prevent static charge buildup

Answer

Bonding jumpers establish an equipotential path to minimize static electricity differences and prevent spark hazards between components and airframe.

Question 4

An avionics technician discovers a wire with damaged insulation during an inspection. According to FAA AC 43.13-1B, the PREFERRED repair method is to:

Accepted Answer

Replace the entire wire run

Answer

AC 43.13-1B recommends replacing the entire wire run when insulation damage is found, as splices can introduce additional failure points.

Question 5

Which safety precaution is MOST important when removing an avionics LRU (Line Replaceable Unit) that contains a lithium battery?

Accepted Answer

Disconnect aircraft power and handle the battery as a fire hazard

Answer

Lithium batteries are a fire and explosion hazard; aircraft power must be disconnected and batteries must be handled with fire-hazard precautions.

(AET) Aircraft Electronics Technician Practice Test

(AET) Aircraft Electronics Technician Practice Test

AET Maintenance Procedures and Safety 2