Maintenance Procedures and Safety 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 Maintenance Procedures and Safety flashcards as text
When working on aircraft avionics in a confined space, what is the FIRST action a technician should take before beginning work?
Answer: Verify adequate ventilation and identify all exit routes
Before entering any confined space, technicians must confirm adequate ventilation and identify all exit routes as a primary safety measure.
Which document authorizes the return of an aircraft to service after avionics maintenance under FAA regulations?
Answer: Maintenance Release signed in the aircraft logbook by a certificated A&P or IA
A certificated A&P or IA must sign the aircraft maintenance record (logbook) to authorize return to service after maintenance.
What is the purpose of a bonding jumper installed between an avionics component and the aircraft structure?
Answer: To ensure equipotential ground and prevent static charge buildup
Bonding jumpers establish an equipotential path to minimize static electricity differences and prevent spark hazards between components and airframe.
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:
Answer: Replace the entire wire run
AC 43.13-1B recommends replacing the entire wire run when insulation damage is found, as splices can introduce additional failure points.
Which safety precaution is MOST important when removing an avionics LRU (Line Replaceable Unit) that contains a lithium battery?
Answer: Disconnect aircraft power and handle the battery as a fire hazard
Lithium batteries are a fire and explosion hazard; aircraft power must be disconnected and batteries must be handled with fire-hazard precautions.
What does the term 'double-break switching' mean in aircraft avionics maintenance safety context?
Answer: Interrupting both the hot and return sides of a circuit simultaneously
Double-break switching interrupts both the positive (hot) and return conductors simultaneously, ensuring complete circuit isolation during maintenance.
When torquing a connector backshell on an aircraft avionics installation, the technician should:
Answer: Use a calibrated torque wrench and reference the manufacturer's specification
Connector backshells must be torqued to manufacturer-specified values using calibrated tools to ensure proper mating without damaging threads or seals.