What safety precautions should be observed when performing electrical maintenance on an aircraft?

• A. Depower equipment, wear PPE, follow procedures, ground static, and confirm de-energization, lockout-tagout, and proper tools
• B. Wear gloves and use a flashlight
• C. Work with energized equipment
• D. No PPE required

Answer: (A)

The main idea is that electrical maintenance on an aircraft must be done with energy sources controlled and personal safety protected. Before working, depower the equipment, wear the appropriate PPE, follow the approved procedures, ground any static, and confirm that all energy sources are de-energized, including using lockout-tagout and verifying zero energy with the proper tools. This approach prevents shock, arc flash, or unintended re-energization while you work, and it ensures you’re using equipment and methods suited for aircraft electrical systems.

Aircraft systems often have multiple energy sources and stored energy in capacitors or batteries, so ensuring a true, verifiable de-energized state is essential. Grounding static helps prevent subtle charges from causing shocks or arcing, and lockout-tagout prevents someone from accidentally re-energizing a circuit while maintenance is underway. Wearing the right PPE and using appropriate, rated tools reduces the risk of electrical injury and equipment damage.

Wearing gloves and a flashlight alone doesn’t address energy isolation or the broader safety steps needed. Working with energized equipment is dangerous and generally not permitted for maintenance. No PPE is not acceptable because protection is required for electrical work.