Air Safety and Cabin Air Quality in the BAe 146 Aircraft(40)

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3.37 Associate Professor Winder told the inquiry:
I believe that tricresyl phosphate is the particular chemical that causes the neurological problems that staff on planes have been exposed to. But I consider that in many of these exposures there is also a hydrocarbon component context, and it is possible that the hydrocarbon exposure may either exacerbate the effect or assist in increased absorption. I do not think it is necessarily one chemical. It may be one chemical, but it is possible that it could be exposure to other chemicals as well.38
34  Submission 7, GCAT, p 5 
35  Submission 7, GCAT, p 5 
36  Submission 8, Associate Professor C. van Netten, p 14 
37  Submission 8, Associate Professor C. van Netten, p 2. 
38  Associate Professor Chris Winder, Evidence, 1 November 1999, p 16 

Aerotoxic syndrome
3.38 In evidence to the inquiry Associate Professor Winder also asserted that symptoms reported by individuals after exposure to fumes on the BAe 146 were sufficiently consistent to indicate the development of a “discrete occupational health condition”. This condition was described as ‘aerotoxic syndrome’. Professor Winder said:
Aerotoxic syndrome is a syndrome which is associated with aircrew exposure at altitude to atmospheric contaminants from engine oil or other aircraft fluids temporarily juxtaposed by the development of a consistent symptomology of irritancy, chemical sensitivity and neurotoxicity.39
and
This syndrome may be reversible following brief exposures, but pictures are emerging of a chronic syndrome following significant exposures.40
Ansett in particular questioned this assertion.41
Mobil Jet Oil II and the issue of toxicity
3.39 While the majority of submissions to the inquiry from medical/occupational health professionals point to components of Mobil Jet Oil II as a source of health problems, some witnesses dispute the oil as a source of toxicity. Dr David Lewis, Chief Medical Officer with Ansett, told the inquiry in evidence:
Last year 1.4 billion people flew on aircraft lubricated by this oil. You take that over the last 35 years and this must be the longest clinical trial for any chemical in the history of medicine. With the 30 cases claimed by Balouet, that would make it a one in 800 million chance of developing aerotoxic syndrome.42
3.40 The National Industrial Chemicals and Assessment Scheme (NICNAS) has placed Mobil Jet Oil II on a list of chemicals for review and assessment. NICNAS has informed the Committee that Mobil Jet Oil II may be selected as a priority for review and assessment - subject to given direction from the government - outside bodies and other factors.
3.41 NICNAS submitted a document titled ‘Mobil Jet Oil II Overview of Available Scientific Background Information’ to the Committee setting out information concerning the chemical ingredients in Mobil Jet Oil II. In the document, NICNAS points to the following information:
　
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