Bleed‑air design’s cabin toxicity risk

An investigation finds toxic engine fumes leaking into cabins have surged, with incidents rising from 12 to 108 per million departures (2014–2024). Events are concentrated on Airbus A320s, especially the A320neo, amid claims Airbus loosened maintenance rules knowing incidents would rise. Most jets use 'bleed air' taken from engines, while Boeing’s 787 avoids this design. — This points to a systemic aviation health hazard tied to design and maintenance choices, implicating regulators, manufacturers, and airlines in preventing neurotoxic exposure for crews and passengers.