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The panel finds that the low levels of detected exposure to all the measured chemical contaminants are not a threat to the health of aircrew or passengers. In particular these pose no carcinogenic, mutaqenic, teratogenic or cumulative toxicological hazard.
Contaminant levels were found to be well below the internationally accepted occupational health standards and cannot precipitate any chronic disorders. The possibility that these odour exposure events could cause flight crew incapacitation was considered. All the measured levels were hundreds to thousands of times below those levels known to cause acute neurotoxic sequel.19
4.22 Captain Jensen told the inquiry on 1 May 2000 that “… the panel accepted that there were short-term symptoms of an irritant nature associated with odours but said no cumulative effects are known to any of the chemicals detected at the levels measured.”20
4.23 Mr Ivor Williams of British Aerospace told the inquiry on 10 April 2000:
What we are proud of is the fact that the contaminants that they found in the system are incredibly low, way below the maximum levels that are permitted by the authorities. They compare very favourably with WorkSafe and occupational health and safety levels.21
4.24 Qantas in its submission to the inquiry commented:
Qantas has been aware of a number of issues in the past relating to the cabin environment of the BAe 146, and has taken a number of initiatives to address them:
(a) … The data available clearly demonstrates that the level of contaminants were well below Work Safe Australia standards and in some cases. are of the type found in many environments.
19 Attachment to Submission 17, Judy Cullinane
20 Ansett Australia, Evidence, 1 May 2000, p 243
21 British Aerospace, Evidence, 10 April 2000, p 238
(b) In December 1998 the Qantas Safety and Environment Department commissioned its own study, conducted by Australian Environmental Health Services, which tested the air quality of a Southern BAe 146-200 aircraft. This study confirmed that the level of organic compounds and other compounds was significantly below the Work Safe Australia standards.22
4.25 Mr David Cox, Group General Manger, Regional Airlines and Fleet Planning with Qantas told the inquiry:
… the various documents and reports produced by manufacturers, doctors, academics, airlines and individuals have been evaluated by Qantas staff. It is the view of Qantas that the information available in these documents demonstrates that the level of contaminants found in the BAe146 cabin environment are well below health authority standards. 23
4.26 National Jet Systems was of the view that in its experience “contamination does not occur at levels which exceed permitted limits”. The company submitted that it had examined the technical reports on trials conducted during 1997 and 1999 into the levels of contamination on board the BAe 146 and that; “ The trial reports conclude that the various contaminants that can be detected in the air are well below the limits published by Work Safe Australia.”24
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Air Safety and Cabin Air Quality in the BAe 146 Aircraft(55)
