Aerotoxic Syndrome—Susceptibility and Recovery

Significant numbers of aircrew and jet airline passengers are affected by post-flight symptoms of ill health, usually nowadays labelled “aerotoxic syndrome”. It could be inferred from a large passenger survey carried out in the Netherlands that up to 50% of flights may engender malaise to varying de...

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Main Author: Jeremy J. Ramsden
Format: Article
Language:English
Published: MDPI AG 2025-05-01
Series:Toxics
Subjects:
Online Access:https://www.mdpi.com/2305-6304/13/6/420
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author Jeremy J. Ramsden
author_facet Jeremy J. Ramsden
author_sort Jeremy J. Ramsden
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description Significant numbers of aircrew and jet airline passengers are affected by post-flight symptoms of ill health, usually nowadays labelled “aerotoxic syndrome”. It could be inferred from a large passenger survey carried out in the Netherlands that up to 50% of flights may engender malaise to varying degrees, and up to 50% of the population might be susceptible to suffering from actual intoxication from the contaminants known to occur in aircraft cabin air. In-flight measurements of its composition have revealed the presence of known neurotoxins, notably tricresyl phosphate and carbon monoxide, both of which can enter the cabin air as it is bled off the main engines. This study reviews the quantitative aspects of this evidence and estimates the susceptibility of the population to neurological damage at the measured levels of contamination, its typical impacts on health, and the likelihood and timescales of post-exposure recovery. Airworthiness directives already mandate that crew and passenger compartment air must be free from harmful or hazardous vapours and gases, but uncertainty regarding the nature of these particular hazards has led to this important aspect of airworthiness having been hitherto unduly neglected. The continuing exponential growth of air passenger traffic means that cabin air contamination will eventually become a major public health hazard if effective action is not taken, some possible courses of which are discussed.
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spelling doaj-art-c19e5b7b543e4ad29b02539c2df22d412025-08-20T03:29:52ZengMDPI AGToxics2305-63042025-05-0113642010.3390/toxics13060420Aerotoxic Syndrome—Susceptibility and RecoveryJeremy J. Ramsden0Department of Biomedical Research, Faculty of Medicine and Health Sciences, The University of Buckingham, Buckingham MK18 1EG, UKSignificant numbers of aircrew and jet airline passengers are affected by post-flight symptoms of ill health, usually nowadays labelled “aerotoxic syndrome”. It could be inferred from a large passenger survey carried out in the Netherlands that up to 50% of flights may engender malaise to varying degrees, and up to 50% of the population might be susceptible to suffering from actual intoxication from the contaminants known to occur in aircraft cabin air. In-flight measurements of its composition have revealed the presence of known neurotoxins, notably tricresyl phosphate and carbon monoxide, both of which can enter the cabin air as it is bled off the main engines. This study reviews the quantitative aspects of this evidence and estimates the susceptibility of the population to neurological damage at the measured levels of contamination, its typical impacts on health, and the likelihood and timescales of post-exposure recovery. Airworthiness directives already mandate that crew and passenger compartment air must be free from harmful or hazardous vapours and gases, but uncertainty regarding the nature of these particular hazards has led to this important aspect of airworthiness having been hitherto unduly neglected. The continuing exponential growth of air passenger traffic means that cabin air contamination will eventually become a major public health hazard if effective action is not taken, some possible courses of which are discussed.https://www.mdpi.com/2305-6304/13/6/420aircraft maintenancecarbon monoxidederegulationfume eventsinhalation toxicitytricresyl phosphate
spellingShingle Jeremy J. Ramsden
Aerotoxic Syndrome—Susceptibility and Recovery
Toxics
aircraft maintenance
carbon monoxide
deregulation
fume events
inhalation toxicity
tricresyl phosphate
title Aerotoxic Syndrome—Susceptibility and Recovery
title_full Aerotoxic Syndrome—Susceptibility and Recovery
title_fullStr Aerotoxic Syndrome—Susceptibility and Recovery
title_full_unstemmed Aerotoxic Syndrome—Susceptibility and Recovery
title_short Aerotoxic Syndrome—Susceptibility and Recovery
title_sort aerotoxic syndrome susceptibility and recovery
topic aircraft maintenance
carbon monoxide
deregulation
fume events
inhalation toxicity
tricresyl phosphate
url https://www.mdpi.com/2305-6304/13/6/420
work_keys_str_mv AT jeremyjramsden aerotoxicsyndromesusceptibilityandrecovery