BySuzanne Rowan Kelleher,

Forbes Staff.

The Federal Aviation Administration (FAA) has done little to address the rise of “fume events,” where toxic jet engine fumes have leaked into an aircraft cabin, leaving flight crews and passengers with symptoms ranging from headaches and nausea to the sort of longer-term neurological symptoms seen in concussed football players.

Thousands of “fume events” have been reported to the FAA since 2010, sometimes leaving flight crew members and passengers with neurological damage resembling concussion victims, a Wall Street Journal investigation revealed Saturday.

The events have mainly occurred on Airbus A320s, which the three largest U.S. legacy airlines use, and to a lesser extent on Boeing aircraft.