ADMT

Arc Damage Modeling Tool

Lectromec's arc damage simulation tool. Simulates wire failures that produce arcing events and the subsequent damage to nearby harnesses, structure, and fuel or hydraulic lines. Used in certification packages for aerospace organizations.

Technical detail

ADMT supports compliance arguments under §25.1707(a), (c), and (e)–(h) by predicting the extent of arc-plume damage as a function of conductor gauge, available fault current, plume duration, target material, and stand-off distance.

The tool is most defensible when paired with anchoring physical tests on representative geometries, after which simulation is used to sweep the design space efficiently.

When it matters

When a certification basis depends on quantified arc-damage radius — particularly for fluid-line separation arguments under §25.1707(e)–(h) — ADMT data is one of the accepted compliance paths.

Related terms

FAA 25.1707 — System Separation Requirements
The Federal Aviation Regulation that requires EWIS to be physically separated and electrically isolated from other EWIS, aircraft systems, fluid lines, control cables, and heated equipment such that no credible failure can produce a hazardous condition.
Heavy Current Cable
Per FAA 25.1707(c), a wire or cable of 16 AWG or larger, or any conductor whose arcing failure could cause significant damage to nearby systems. Heavy current cables and their associated EWIS components must be physically separated and electrically isolated under fault conditions.
Wet Arc Track Propagation
A failure mode in which a contaminating fluid lowers the surface dielectric strength of wire insulation, allowing an arc to track along the insulation and propagate from a single initial breach to multiple adjacent conductors.