Toxic Fumes Are Leaking Into Airplanes, Sickening Crews and Passengers

Toxic fumes from jet engines are leaking into aircraft cabins at an accelerating rate, reaching 108 incidents per million departures in 2024 compared to 12 in 2014, a Wall Street Journal investigation found. The fumes contain neurotoxins and carbon monoxide that have caused brain injuries in crew members. JetBlue flight attendant Florence Chesson suffered permanent neurological damage after inhaling engine oil vapors in 2018, diagnosed by neurologists as equivalent to an NFL linebacker's concussion.

The surge is driven by Airbus A320 aircraft, particularly the A320neo model introduced in 2016. WSJ reports Airbus loosened maintenance requirements under airline pressure despite knowing the changes would increase incidents. The FAA received over 700 fume event reports from major U.S. airlines in 2024. Most commercial jets except Boeing's 787 use a 'bleed air' system that pulls cabin air through engines.

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