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

Begin the repair immediately to save time

Answer

Request a second technician to observe

Answer

File a maintenance log entry

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

FAA Form 8130-3

Answer

FAA Form 337

Answer

Work order signed by the shop supervisor

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

To provide a current path for normal circuit operation

Answer

To protect the component from lightning strikes

Answer

To satisfy FAA wiring color-code requirements

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

Apply electrical tape over the damage

Answer

Splice in a new wire segment using approved splice connectors

Answer

Mark the wire and defer repair to next scheduled maintenance

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

Wear anti-static wrist strap only

Answer

Ensure the cockpit circuit breaker is pulled

Answer

Use only non-magnetic tools

Question 6

What does the term 'double-break switching' mean in aircraft avionics maintenance safety context?

Accepted Answer

Interrupting both the hot and return sides of a circuit simultaneously

Answer

Using two circuit breakers in series for redundancy

Answer

Breaking the circuit at two physical locations

Answer

Applying two independent lock-out tags

Question 7

When torquing a connector backshell on an aircraft avionics installation, the technician should:

Accepted Answer

Use a calibrated torque wrench and reference the manufacturer's specification

Answer

Tighten until hand-tight plus one quarter turn

Answer

Apply Loctite and torque to feel

Answer

Torque to standard AN hardware values regardless of connector type