The Federal Aviation Administration (FAA) has received a significant number of reports regarding toxic smoke seeping into airplane cockpits and cabins. This information was highlighted by a recent article in the Wall Street Journal.
This issue arises from a design feature in certain aircraft, notably the “bleed air” system, which draws air from the engines into the cabin.
The surge in reports is mainly associated with the Airbus A320, a model primarily operated by the three largest U.S. airlines. It’s notable that incidents have been reported at a frequency seven times higher than those involving the Boeing 737, which lacks the bleed air mechanism.
As both JetBlue and Spirit predominantly use Airbus planes, there’s been a staggering 660% increase in fume incidents reported between 2016 and 2024.
Passengers and crew members have described the odors as resembling “wet dogs” and “nail polish,” which has prompted several emergency landings, according to documents reviewed by the Journal.
While most smoke released is considered mild and consists of carbon monoxide along with unidentified neurotoxins, prolonged exposure can potentially lead to more serious health issues. Despite this, both aircraft manufacturers and airline lobbying groups have minimized concerns about breathing in such toxic smoke, as per the Journal’s findings.
The FAA’s website references a 2015 review indicating that major U.S. airlines reported fewer than 33 smoke events per million flights, which equates to around 330 incidents annually.
It’s worth noting that many crew members may not report every fume incident, leading to an underestimation of the actual numbers.
Airlines have been funding studies to counter claims that fume leaks from aircraft cause significant harm, while the Journal has challenged proposed legislation aimed at enhancing safety measures against these leaks.
Efforts in Congress to pass smoke pollution laws have been attempted at least 19 times over the past two decades, based on records obtained by Julie Brightwell, Boeing’s chief product engineer.
In 2024, a bill introduced by Rep. John Galamendi (D-Calif) and Sen. Richard Blumenthal (D-Conn.) aimed to include aircraft sensors and more extensive investigations. Following pushback from the industry, the law that was eventually enacted last year only mandated an investigation into smoke leaks and improved reporting of incidents.
Additionally, in August, lawmaker Maxwell Frost (D-Fla.) proposed new legislation requiring airlines to install filters on aircraft to completely eliminate smoke leaks within a seven-year timeframe.
The Hill has reached out to Frost’s office for comments regarding the current status of this bill.
