Cabin Air Safety/Aerotoxic Syndrome

Richard Burden Excerpts

Thursday 17th March 2016 Westminster Hall

[Richard Burden (Birmingham, Northfield) (Lab)]

Mr Hanson, I welcome you to the Chair. I add my congratulations to my hon. Friend the Member for Stalybridge and Hyde (Jonathan Reynolds) on securing the debate, as well as to my hon. Friends the Members for Altrincham and Sale West (Mr Brady) and for Brent Central (Dawn Butler), who supported him in his application to the Backbench Business Committee. I thank that Committee for granting this very important debate.

I also thank all hon. Members from both sides of the House who have contributed today. I counted 12, taking into account interventions and speeches, which shows the importance that Members attach to this issue. We heard speeches from the hon. Members for Crawley (Henry Smith) and for Horsham (Jeremy Quin), as well as from my hon. Friends the Members for Heywood and Middleton (Liz McInnes) and for York Central (Rachael Maskell), who both brought scientific expertise to the debate, which was very welcome. My hon. Friend the Member for Brent Central spoke with a lot of personal knowledge of this issue from her involvement in the aviation industry. My hon. Friend the Member for Easington (Grahame M. Morris) spoke with a great deal of passion. Like my hon. Friend the Member for York Central, he emphasised the importance of trade unions being able to bring these kinds of issues to the House’s attention and talked about that being an important part of democracy.

The aviation industry and the aviation sector is a key pillar of our economy, but it is more than that, even though that is important enough in its own right; travel by air has made our world a smaller place. It fosters direct face-to-face contact and understanding between peoples across the globe in a way that no other mode of travel ever has. That is why it is right that we pay tribute today to those who work in the civil aviation sector, on the ground as well as in the air.

However, this debate really does raise genuine welfare concerns, particularly for cabin crew and pilots: some of the people on whom we rely to get comfortably and safely to our destinations. Their work, as many hon. Members have said, is far from easy. Fatigue is regularly among the top concerns of staff in the air, and we know that that is an underlying but ever-growing problem. We also appreciate the impact that their work can have on their family life.

Despite all those pressures, however, what is clear is that air crew do the job because they love it, and two such people were Richard Westgate and Matt Bass. I want to join the tributes to their families and to Unite. I declare myself a proud member of Unite and draw attention to my entry in the Register of Members’ Financial Interests. It is right to recognise that parts of the media have tried to move the issue up the public agenda. It has received attention from, for example, BBC’s “Victoria Derbyshire” programme and ITN’s “Tonight” programme.

All those people and institutions are right in saying that key unanswered questions remain: on research into air fume events, monitoring and detection systems, and awareness, education and diagnosis of symptoms. The Government’s responsibility is to do all they can to ensure the safety of passengers and crew alike. The existence of regulators is important, but does not take away that overall responsibility. As my hon. Friend the Member for Stalybridge and Hyde said, we know from the asbestos issue that what authorities often believe for a long time to be the case does not always turn out to be correct.

We know that many modern aircraft use bleed-air systems—that has been referred to many times in this debate—to supply air to the cabin, but we also know that faults with engine seals and seepage can lead to contaminated fumes containing toxins. What is not crystal clear is the implication of short and long-term exposure to contaminated air and its links to aerotoxic syndrome which, given the range of systems, is clearly difficult to diagnose. However, there are some things we already know. The coroner’s report on the death of Richard Westgate recognised:

“symptoms consistent with chronic exposure to organophosphates.”

We know that Matt Bass shared similar symptoms. The inquest into his death is ongoing. We also know that Unite is pursuing some 61 individual cases. The question is real: is aerotoxic syndrome an occupational illness?

A number of Members today have drawn attention to reports and position papers produced by the Committee on Toxicity and how its findings have been interpreted. There is a clear distinction between saying there is no evidence of aerotoxic syndrome, as some suggest, and saying that there is not enough evidence to prove that link. As Professor Alan Boobis, the Committee’s chair, said in his interview on ITN’s “Tonight” programme last year:

“We made proposals for research that could be pursued…as far as I know, no one came back.”

The Association of Flight Attendants also called for further research in its critique of the committee’s 2007 report, in which it stated that

“there is a need for a large scale sampling study.”

My hon. Friend the Member for Stalybridge and Hyde rightly called for an independent inquiry to get to the bottom of these things, and that call has been echoed by others. The Minister will no doubt say that the UK is supporting an international approach for research through the European Aviation Safety Agency. That is important, and I understand that the agency will publish a preliminary report in the autumn. It is also important to know exactly what that is about and who is doing it. I understand that the agency has contracted out the work; in that context, will the Minister confirm the independence of the bodies commissioned to do that study and who was consulted on the choice of contractor? If he does not have the information now, I understand, and perhaps he will write to me.

[Mr Goodwill]

I thank the hon. Gentleman for raising that. I follows on from four pieces of research in the UK, most notably that by Cranfield University, so it is not as if we have not already carried out a lot of work in the UK.

[Richard Burden]

I am grateful to the Minister for that information, but I want to press him on EASA’s study and its remit. His letter in November 2015 to the Chair of the Transport Committee suggests that EASA is currently looking at what equipment should be put in place to undertake cockpit and cabin air measurements in future and will report in the autumn. That is important, and I will come back to it in a moment. I shall be grateful if the Minister will confirm whether the current EASA project has any remit to survey existing evidence from inquiries and studies—he mentioned some of them—whether from the UK, from other parts of Europe, international or in, for example, Australia.

Those inquiries and studies of air cabin safety have happened already. If the EASA does not have a remit to look at those other studies and can look only at monitoring for the future, should the Minister not ensure that someone is doing that work already? If it is happening, that is great, but it would be useful to know who is doing it. If it is not happening, why not? A number of hon. Members have mentioned the importance of the precautionary principle, which we need to apply in this case. The state has a duty of care.

On research, I have been told that no toxicity studies have reflected the real-life atmospheric pressure and temperature levels of planes at altitude. My hon. Friend the Member for Brent Central made this point. To me, that says that we simply do not know the synergistic effects and impact of prolonged exposure. Understanding that is critical if we are to establish whether this is an occupational disease. Will the Minister tell me whether I am right and, if I am, who will do that study and who will put in place those tests on aircraft in flight?

Whatever else is or is not being done, it seems from what the Minister said in his letter to the Chair of the Transport Committee in November 2015 that EASA is looking into the use of monitoring equipment, and that is important. It is vital to improve the data available for research. There are already legal requirements for cabin air to adhere to set levels of, for example, carbon dioxide and other toxins, but without appropriate detection equipment in place how do we know whether those standards are being met? Will the Minister say whether systems are available that could be put on aircraft? If there are, why are they not on aircraft and what can we do to ensure that that happens from now on?

No one denies that the fume events occur, but we do not know the true extent to which contaminated air incidents happen, as we have heard time and again today. Without monitoring, it is up to aircraft crew to report incidents. As was also said today, it is down to the noses of air crew. That makes it equally important that they receive adequate awareness training to detect leaks, whether by smell or other means. It is not unreasonable to suggest, as various hon. Members have, that pilots and cabin crew may be reluctant to report, particularly in the highly competitive environments in which airlines now operate, what they suspect could be minor instances, especially given the possible implications for airlines and perhaps for their own professional interests.

The 2008 ASA critique of the Committee on Toxicity also noted that the rate and reliability of reports coming in were flawed. So what steps are the Government taking with the regulators to ensure that awareness training is in place and that reporting is expected and enforced?

Finally, on the types of aircraft, what guidance does the Minister have on whether certain aircraft are particularly susceptible to fume events? In line with the precautionary principle that Members from all parties have said we need to adopt, where there is now bleed-free architecture available, what steps can we take to ensure that all future aircraft built adopt that technology? I am glad that the Minister asked his civil servants whether there was any link with cabin air in the design of the 787 Dreamliner. They told him that the design was about efficiency, not cabin air. I am sure it was partly about efficiency, but will the Minister go back to them and ask them to check whether representations were made and whether the Federal Aviation Administration talked about air quality in cabins being a factor in the design of bleed-free engines?

I hope the Minister will address the questions that all hon. Members have raised today. We owe it to Richard Westgate and Matt Bass, and to their families. We owe it to cabin crews and pilots themselves. Because all of us are in this category as well, we owe it to the travelling public, the passengers. We need to get to the bottom of this without further delay.

--- Later in debate ---

[Mr Goodwill]

That is a very reasonable point to make. The findings have been made by professional toxicologists, whose job it is to analyse the effects of toxic compounds in a variety of locations, including the workplace. I shall come on to talk about the number of so-called fume events, and I have some evidence from the CAA to put it in context.

[Richard Burden]

I understand the reports that the Minister refers to. I do not know whether he saw, as I did, the interview that Professor Boobis gave to the “Tonight” programme, when he was at pains to say that the Committee on Toxicity was not saying that cabin air was safe when the incidents occurred. He went on to say that it had made proposals for further research that could be pursued; as far as he knew no one came back to the committee. Has that been followed up?

[Mr Goodwill]

Research is ongoing, not least through the European Aviation Safety Agency, but the levels of OP concentration in situations where no fume event has occurred—which have been measured widely—have been found to be no greater than they are in this Chamber or any domestic location. They are very small background levels, as one would expect. Particularly given the sensitivity of some of the testing that can now be carried out, it is not difficult to find OPs almost anywhere.

As a toxic mechanism for the reported illnesses was found to be unlikely, a nocebo effect was considered a plausible alternative explanation for the symptoms. A nocebo effect can be defined as a detrimental effect on health produced by psychological or psychosomatic factors—for example where a subject develops symptoms as a reaction to a situation that he or she perceives as dangerous or hazardous. However, neither option could be proved beyond doubt given the available data; but we know that the nocebo effect happens in other circumstances. I hesitate to give this example from my own experience, but when I was a child my mother would serve us a cooked breakfast and after we had finished she would say, “I hope those sausages were all right. They were well past their sell-by date,” and one felt a feeling in one’s stomach. It is not the same thing, but it shows how psychological effects can pass into physical effects. That is one of the theories put forward by the scientists looking at the matter. The nocebo is an established psychological and medical situation.

--- Later in debate ---

[Mr Goodwill]

I am certainly happy to interrogate the CAA on its interpretation of the rules on COSHH. I am well aware of the operation of the regulations; as a former road tanker driver, I know all about COSHH regulations. But of course aviation is an international business and aircraft are not necessarily within our jurisdiction as they are flying, so it is important that we have international agreements. Indeed, many aircraft that carry British nationals are flagged to other countries around the world, and therefore we need to ensure that their standards are as high as ours and that work can be progressed internationally.

[Richard Burden]

I will add to the interventions now, so that the Minister can get them out of the way in one go. Could I press him a little more on the business about EASA? If I understood him correctly just now, he was saying that EASA was looking at the research that is available. The letter that he sent to the Transport Committee, as I understood it, suggested that EASA was looking not at that, but at the future of monitoring equipment. That is very important, but my question stands: who is looking at the body of research that is already there, nationally, in Europe and internationally, pulling it all together and seeing whether any action can be taken on the basis of what we already know?

[Mr Goodwill]

Certainly the UK has looked at the studies that have already taken place. Indeed, many of those were initiated in this country by the previous Labour Government. But we are obviously very keen to look at how we can work to get further information. In terms of the EASA research, the hon. Gentleman is absolutely right. In fact, due to the unpredictability and rarity of fume events and due to the international nature of the aviation industry, it is the Department’s view that an international approach to any future research investigations would be appropriate. The opportunity to collect data from a broader sample base than is available in the UK alone would lead to a higher probability of more meaningful evidence being collated. The Department therefore wrote to EASA with those views in March 2014.

EASA did launch in the spring of 2015 a preliminary in-flight cabin air measurement campaign. That will develop a methodology and put in place adequate equipment to perform cockpit and cabin air measurements. The results of that campaign, which will be used to prepare for an envisaged large-scale project in the future, are expected in autumn 2016. The Department will follow with interest the progress of that work; indeed, I will update the hon. Gentleman when I get further information.

At national level, the aviation health unit within the medical department of the CAA will continue to monitor issues relating to cabin air, as part of its wider role as specialist adviser to the Government on aviation health issues.

As I said, EASA has launched preliminary work, and we hope to carry that further. I point out that the UK is not the only country in the world conducting research in this field. For example, the German authorities, as well as the country’s biggest airline, Lufthansa, have conducted similar research projects to the ones mentioned here, and they have arrived at the same conclusions. That is not to say that the industry is complacent—far from it. New technologies for improving the filtration and monitoring of cabin air are emerging all the time, and as we have discussed, there is a particular aircraft type, the new Boeing 787 Dreamliner, that uses a different source of air, although it must be noted that the equivalent Airbus aircraft, the A350, uses the conventional bleed-air system for cabin air sourcing.

The aviation industry is aware of the concerns that have been raised and is continuously reviewing the current practices, as well as developing options for future improvements. The Government are working together with the industry to support that momentum. The joint Government and industry funded aerospace research and development programme, supported by the Aerospace Technology Institute and Innovate UK, is supporting projects in related areas, including air and oil systems, electronic technologies and system health monitoring, all of which will lead to enhanced cabin air quality as one of the outcomes. The Aerospace Technology Institute is currently working with industry to launch further projects in these areas.

In 2013, industry and Government, working together through the Aerospace Growth Partnership, made a joint funding commitment worth £2.1 billion in total for aerospace research and development over seven years. That was protected, and extended by an additional £900 million over six years to 2025-26, in the spending review in 2015. The industry has committed to matching the investment from the Government in this area. The industry certainly understands the importance of research and development aimed at improving overall safety. However, for the industry to drastically change the way the aircraft are air-conditioned or, indeed, to change the lubricants, there would have to be clear evidence that shows that cabin air quality is harmful to crew and passengers. The current practice of using air from the compression stage of the engine—bleed air—has been shown to be an effective, fuel-efficient and reliable way of providing air to the cabin.

I hope that I have demonstrated that the issue is taken seriously by all parties involved. However, as it is a complex issue with little evidence to show that a change is needed, it will take time to find new and innovative solutions that would be accepted by all. We certainly need to co-ordinate international research and I will raise that with the CAA at our next meeting. I will also discuss the issue with the British Airline Pilots Association, although I have to say that the issue has not necessarily been very high on its agenda at some meetings I have had with it. Maybe debates such as this will further raise awareness among those who work in the industry.

Finally, I urge a note of caution on the precautionary principle. I was a member of the European Parliament’s Committee on the Environment, Public Health and Consumer Policy and, very often, the precautionary principle was used as a way of taking action on something for which there was no supporting evidence. I cite the case of phthalates used as a softening substance in PVC for medical uses and for things such as babies’ bottles. The outcome of making a change based on no evidence other than some very limited migration evidence actually resulted in products that were not as suitable and could have jeopardised people’s treatment. We need to be very careful about using the precautionary principle. We need to look at the actual evidence. I am pleased that research has been carried out, and more research will be carried out.

Once again, I stress how seriously I take the issue and how important it is that we get more evidence. I thank the hon. Members for Stalybridge and Hyde and for Brent Central, and my hon. Friend the Member for Altrincham and Sale West (Mr Brady) for securing the debate and for providing us with the opportunity to discuss this important and, to many, very personal issue.