Where are bonding straps typically installed in an aircraft airframe?

• A. At joints and mounting points as required
• B. Only near the battery compartment
• C. Only at the engine firewall
• D. Around the cockpit windows

Answer: (A)

Bonding straps are part of the electrical bonding system that keeps all metal parts of the airframe at the same electrical potential. They provide a low-resistance path across joints and mounting points, which helps prevent static buildup and directs lightning energy harmlessly around the structure. Because joints and mounting points can interrupt conductivity or involve dissimilar metals, straps are installed wherever those potential breaks occur to maintain continuous bonding. This means they’re placed at joints and mounting points as required by the airframe design, not limited to a single location like near the battery, engine firewall, or cockpit windows.