Wall Street Journal probe finds thousands of airline 'fume events' tied to lasting brain injuries
Report says cabin air incidents reported to the FAA since 2010 have surged and many have been linked to Airbus A320 jets; crew members describe symptoms resembling traumatic brain injury
A Wall Street Journal investigation found that thousands of so-called "fume events" on commercial flights since 2010 have been reported to the U.S. Federal Aviation Administration, and that many of those incidents have been linked to toxic cabin air exposures that crew members and some passengers say led to lasting brain and nervous-system injuries.
The WSJ reported the rate of incidents has risen sharply in recent years and that a large share of the reports involved Airbus A320 aircraft. Flight attendants who described acute symptoms to the paper said they experienced dizziness, confusion, metallic tastes, breathing difficulties and vomiting during or after flights.
One flight attendant, Florence Chesson, told the WSJ she was diagnosed with a traumatic brain injury and damage to her nervous system after inhaling fumes aboard an A320 on a December 2017 flight to Puerto Rico. Chesson said the episode began with a pervasive "dirty feet" odor in the cabin. She described feeling drugged, becoming dazed and confused, and recalling repetitive speech immediately after the event. Two colleagues were taken to hospital after the aircraft landed, the WSJ reported.
Chesson's treating physician, Robert Kaniecki, told the WSJ that the impacts to her brain were "extraordinarily similar" to those seen in National Football League players who suffered severe head trauma. Kaniecki said he has treated about 12 pilots and roughly 100 flight attendants for similar brain injuries after alleged in-flight fume exposures over the past two decades, according to the report.
The WSJ's probe, which aggregated FAA reports and interviews with crew members, passengers and medical professionals, said reports of fume events have multiplied in recent years. The paper identified a pattern in which cabin air contamination was reported both on aircraft types including the A320 and on other models, though it highlighted the concentration of reports involving the A320 family.
Separately, aviation-safety incidents involving visible smoke or fire in cabins have continued to prompt emergency responses but are not necessarily part of the WSJ's fume-events reporting. In April, a Bombardier CRJ900 operated by an American Eagle carrier was reported to have filled with smoke after landing at Augusta Regional Airport in Georgia and passengers evacuated via the wings. American Airlines told local media the flight had experienced a maintenance issue, all passengers were escorted to the terminal and the FAA was investigating; no injuries were reported.
In a separate May 31 incident reported in China, a power bank in an overhead locker on a China Southern Airlines flight from Hangzhou to Shenzhen ignited shortly after takeoff, producing thick acrid smoke. Video of the event showed flight attendants extinguishing smoldering batteries and the aircraft returning to the departure airport 15 minutes after takeoff. A China Southern spokesperson said the crew "handled it properly and quickly eliminated the safety risk," and that no one was injured.
A number of affected crew and passengers have described persistent cognitive and neurological symptoms following fume events. Medical practitioners interviewed by the WSJ told investigators that the symptom patterns in some cases resemble those seen in traumatic brain injury and in chronic traumatic encephalopathy, a degenerative condition associated with repeated head trauma. Researchers say linking a single episode of chemical exposure to long-term neurological disease can be complex, requiring detailed medical and toxicological study.
Airlines and manufacturers have faced questions about cabin air quality, bleed-air systems that draw compressed air from engines into aircraft environmental controls, and maintenance procedures aimed at preventing oil or hydraulic fluid leaks into air systems. Airbus, JetBlue and other carriers were contacted by media outlets seeking comment; public statements by airlines have typically emphasized safety protocols and investigations when incidents occur.
The FAA maintains a database of reports and investigates events that raise safety concerns. Regulators and industry stakeholders have at times differed over the frequency and severity of fume events and the best approaches for monitoring cabin air and protecting crew and passengers. Advocacy groups representing flight crews and some medical professionals have pressed for greater oversight, mandatory incident reporting standards, improved air monitoring and medical follow-up after exposures.
The WSJ investigation and the accounts it collected underscore continuing debate in aviation and health communities over the causes, prevalence and long-term consequences of contaminated cabin air. Federal regulators, aircraft manufacturers and carriers continue to evaluate incident reports and safety measures as researchers and clinicians examine the medical implications for those who say they were harmed.
Daily Mail and other outlets reporting on the WSJ findings said they contacted Airbus and JetBlue for comment. The FAA did not immediately provide new public findings tied specifically to the WSJ's aggregation of reports, and some investigations into individual events remain open.
As the aviation industry and health professionals weigh the evidence, regulatory scrutiny and follow-up medical evaluations for exposed crew and passengers are likely to remain central to responses to reported fume events.