Arc Damage Assessment of Arc Plume and Physical Damage
AIR6982
Describes the relative measurement of assessing the damage zone of arc plasma to determine appropriate separation/segregation requirements between a wire harness and nearby components
Rationale: The continuing safe operation and airworthiness of an aircraft depends on the safe transfer of electrical energy by Electrical Wiring Interconnection System (EWIS) components. If an EWIS failure occurs, the separation distance from one EWIS component to another, systems (fuel tanks, fuel pipes, and other hazardous fluid carrying lines), or structure plays an important role in ensuring that hazardous effects of the failure are mitigated to an acceptable level. FAA guidance (AC25.1701) requires applicants to design EWIS with appropriate separation to minimize the possibility of hazardous effects on an aircraft system or its sub-systems.
