The term “aerotoxic syndrome” is not a medically recognised syndrome and does not define a discrete set of symptoms or signs. The Civil Aviation Authority (CAA) Medical Department, who lead on aviation medical issues, has for a number of years maintained a separate record of cases of pilot applicants who reported acute or long-term symptoms which they considered were linked to exposure to contaminated cabin air. Out of 28 cases, 14 pilots have since returned to flying or were never assessed as unfit, leaving 14 who remain unfit although a number of these individuals are now over the normal retirement age. No new cases have been added since June 2012 and we are not aware of any further cases that are currently under review. No reports have been received from cabin crew. The CAA Medical Department does not oversee the medical fitness of cabin crew and any such cases would be managed by the crew member's employer.