What should the resistance level of each bonding connection not exceed?

The resistance level of each bonding connection is critical in ensuring the proper functioning of an aircraft's electrical system. The industry standard is that the resistance of bonding connections should not exceed 0.003 ohm. Keeping the resistance at or below this level ensures that there is a low-resistance path for electrical currents, which is essential for minimizing electromagnetic interference and ensuring that systems like lightning protection and static discharge work effectively.

When the resistance in bonding connections is higher than the specified limit, it can lead to increased heat generation at the joint, potential failure of electrical systems, and diminished effectiveness of safety and operational procedures. Hence, maintaining a resistance of 0.003 ohm or lower is essential for safety and the reliable operation of aircraft systems.