If they are flying into or near enough to spark (within 1 metre?) of power lines...

quickthrower2 on Aug 29, 2023 | parent | context | favorite | on: Launch HN: HyLight (YC S23) – Hydrogen airships to...

If they are flying into or near enough to spark (within 1 metre?) of power lines you have a bigger problem: the operator is not in control of where it is flying.