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Pilot inflight collapse: Germany investigates cabin air poisons

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Following the copilot's collapse with nausea from oil fumes in the cockpit air on an Air Berlin flight from Milan Malpensa to Dusseldorf in November, German accident investigator BFU has taken the unprecedented step of sending a blood sample from the copilot for analysis to a specialist scientific organisation.

From previous experience the BFU knew what it might find in the copilot's blood: tri-ortho-cresyl phosphate (TOCP), a chemical constituent of the anti-wear additives in aircraft engine oil. This neurotoxic organophosphate has, on numerous documented occasions worldwide, got into the engine bleed air fed to the cockpit and cabin for air conditioning and pressurisation.

So the BFU arranged for the blood sample - taken from the copilot at a Dusseldorf hospital immediately after the flight - to be sent to the University of Nebraska for analysis. The tests proved positive, the BFU has reported. There was indeed TOCP in the copilot's blood, and what is more it had bonded with one of the natural enzymes in the copilot's body that regulates muscular and cognitive neural activity. 

This is what TOCP does. The neurotoxicity of organophosphates is a known and understood phenomenon.

The BFU has said it is not going to put this subject down*. It is going to investigate the medical consequences of TOCP poisoning for pilots. Actually this is well known, but the BFU wants its own proof.

This is just what the airlines and aircraft manufacturers have been dreading: a government agency that is not prepared to look the other way any longer, like all the others have done so far.

The UK Civil Aviation Authority, for example, has had to face several cases of the inflight incapacitation of airline pilots.

Its reaction? Heath and Safety issues in an aircraft cabin are not its job [actually that's a wilful misinterpretation of its duties], and besides which, it was the pilots' fault for not getting their oxygen masks on fast enough. 

How refreshing to see an agency like the BFU with the courage to face up to an issue as controversial as this.

It may lead to the industry finally having to do something about a problem which has been well known and understood for fifty years, and which has robbed thousands of flightcrew and cabin crew of their health and livelihoods.

Watch now as those with interests at stake try to silence the BFU.

Watch the conspiracy theories about the blood samples being rolled out. 

Watch for the denigration of the copilot as a total wimp because the captain was not affected to the same degree.

Even Boeing, which has eliminated the risk of organophosphate contamination from its 787 series by generating cabin air supplies from sources independent of the engines and auxiliary power units, cannot celebrate, because all its other types are conventional.

The Air Berlin flight in this case was a Boeing 737-700 operated for the airline by Germania, but in October last year an Air Berlin Airbus A330 had just such an event, and the BFU is looking into that, too.

No pressurised types that draw bleed air from the engines or APU are immune. That means all of them except the 787.

If you want to see just how convoluted this issue has become, visit my blog entry about Cranfield University's awful "report" on cabin air contaminants. Incidentally, Professor Ramsden, who dared criticise the report is no longer with the University.

*The link takes you to the BFU report, in German, and you have to scroll down the bulletin some distance to this report, which is for the event dated 18 November.


What's the pilot there for?

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Loss of control in big jets is a problem that has had the industry wringing its hands for years. 

This blog too - more space has been devoted here to LOC and specific examples of it (like AF447) than any other issue.

But big jet LOC, although last year happened to be free of it, is still going to happen again unless the industry does more than talk about it, because the problems that caused the nine fatal LOC events since 2000 are issues of human physiology and cognitive capabilities.

The physiology can't be changed, but the cognitive capabilities can: it's called training. But the right kind, not what we do now because that clearly isn't working.

There have been two favoured theories for dealing with LOC. The most common was to train crews in upset recovery techniques.

The other - particularly favoured by manufacturer Airbus - was to ensure that the aircraft stays within its flight envelope and avoids extreme attitudes, so upset recovery becomes unnecessary.

AF447 blew the Airbus theory out of the water. When the autopilot/autothrottle tripped out in the cruise, the flight control law switched out of normal, which has full flight envelope protection, into alternate, where there is very little protection. When the crew's manual flight control inputs took the aircraft outside its flight envelope, the crew quickly lost their situational awareness and never regained it, according to the flight recorders.

Behind the scenes, some organisations have been brainstorming the LOC phenomenon, but there's no action plan yet.

The latest idea, the product of a LOC analysis group, is to study what pilots are looking at and doing before they make the decisions that decide whether they retain control or lose it. Called the Pilot Monitoring Study, it is examining in detail where pilots' eyes look, what information they could glean from where they look, and what they do. The UK Civil Aviation Authority has commissioned this study, working with several airlines.

What they have found (they have completed the fact-finding phase) could make the skies much safer if used intelligently.

But training, and attitudes to training by regulators, airlines and flight training organisations, are going to have to change. Find out how in the 31 January issue of Flight International (and soon after on Flightglobal).

...to an even greater degree than the sea...

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The Costa Concordia shipwreck is a highly visible reminder that the latest technology does not guarantee passengers their safety.

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The sight of the toppled wreck, its pristine superstructure shining in the winter sun, its funnel almost paralleling the sea, taunts its owners. The word's media swarm like seagulls over a beached whale, and the wreck fills the world's television screens for hours every day, making Costa Concordia's gigantic, helpless hull a semi-permanent monument to whatever mistakes caused this ultimate humiliation in familiar waters and perfect weather.

Until aviation became the global trading system it now is, the maritime world was the main source of many of the world's great dreams of adventure. The fact that the trumpeted claim of the Titanic's owners was that she was unsinkable shows how much risk, at that time, had always been associated with going to sea.

But then aviators took over the swashbuckling role from the mariners. Risk is always a part of romance, and early aviation offered plenty of danger.

Just after the First World War, a young aviator who had joined the insurance industry summed up the risks to those who fly. Capt A.G. Lamplugh used a comparison with the marine world: "Aviation in itself is not inherently dangerous, but to an even greater degree than the sea, it is terribly unforgiving of any carelessness, incapacity or neglect."

The marine world is being reminded that there is no room for carelessness, incapacity or neglect despite all the defences provided by modern design and technology.

And in this week's issue of Flight International we have our annual reminder of that truth: our review and analysis of global airline accidents in 2011

Oops, wrong lever...watch your speed...

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The crew of an Airbus A300-600 at London Gatwick found the slats/flaps wouldn't deploy correctly after start-up, so they recycled them several times, following procedures in the QRH, and talking to their engineering base.

After several recycles, carried out by the copilot (the PNF on this trip to Crete) the ECAM pronounced slats/flaps were correctly set.

Take-off was uneventful. But the crew was mentally prepared to deal with flap alerts.

Just after take-off, when the captain called for gear-up, the copilot inadvertently selected flaps up. 

A couple of stall warnings later, to which the captain responded by reducing the angle of attack, the aircraft had accelerated into a safe climb regime. Meanwhile the captain called again for gear up, noticing, during his puzzled scan, that it was still deployed

Until the captain called the second time for gear up, the copilot had not noticed what he had done. 

We know what he must have felt like when he realised.

He told the skipper what had happened.

The Air Accident Investigation Branch report on this incident quotes a book called Human Factors for Pilots. "...if the decision-maker is preoccupied he may make the correct initial decision, inadvertently exercise the wrong skill, but fail to monitor his own activity and remain completely unaware of the mistake that he has made. This mechanism of error is very common on flight decks, and examples abound of inadvertent control operations such as raising flaps instead of undercarriage immediately after take-off."

So this was just another example.

The AAIB verdict is this: "The distraction of the slat problem and the preoccupation with the possibility of a slat malfunction on departure had mentally predisposed him to exercise the wrong motor skill." The Board makes no more of it than that, but felt it was worth publishing the event in its latest Bulletin, pour encourager les autres.  

Who/when?

Monarch, 26 July 2011. Could have been any of us. But at least Monarch pilots know how to handle a stall warning, unlike a few other unhappy crews in the last few years.

What Daily Mail passengers worry about on a BA flight

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On 20 December a British Airways Airbus A321 flight from Heathrow to Glasgow suffered a serious cabin air contamination event.

The pilots felt dizzy and, worried about losing consciousness, donned their oxygen masks, declared an emergency and rapidly returned to LHR where they were met by full emergency services and paramedics.

The landing was fine. The passengers were told the return to Heathrow was precautionary because of "a technical problem" and promptly put on new flights to Glasgow.

If the passengers subsequently suffered ill effects from the same toxic fumes that were making the pilots feel dizzy, they would not have known that, after such an event, it is wise to see a doctor and have a blood test taken to determine whether organophosphate neurotoxins are present.

Meanwhile, Daily Mail readers who read this story on line know precisely what it was about that flight that bothered them. You can read it in their comments.

It was the fact that the pilots were women.

Here is a selection:

"Women drivers getting all dizzy, lets hope the airline in question learns its lesson, probably better sticking to serving the drinks in future girls."

"Maybe someone slipped a Mills and Boon into their checklist."

"With the best will in the world many of us already find flying an ordeal and the thought of the plane in the hands of 2 women in the cockpit more unnerving than usual. On one flight I was on it was announced after take off that the co-pilot was a woman. I remember feeling some trepidation at the time but comforted by the fact that at least the pilot was male. This was a gut reaction and I am sure that many women have felt the same. Of course, I will be accused of sexism but I rank my safety and well being and that includes the perception of being safe and well as more important than political correctness."

BA says it checked the A321, declared NFF (no fault found), and it was back in service the next day.

So it's all fine, then. BA just has to use male pilots, and the problem is solved as far as DM readers are concerned.


PICTURES: Flying through the ash. It's EZY

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During the European volcanic ash grounding in April 2010, EasyJet's head of engineering Ian Davies began to wonder if there was a better way, so he googled volcanic ash and emerged with a name: Dr Fred Prata of NILU, the Norwegian Institute of Air Research.

Dr Fred had been working for years on systems for tracking volcanic ash by satellite and was probably the world's foremost expert on it, so Davies hit the jackpot first time. But Dr Fred was also working on developing an aircraft-mounted infra-red ash sensor, called AVOID, that could provide pilots with a display a bit like a weather radar showing them where the worst ash was so they could avoid it. At FL200 it can see ash about 100km (54nm) ahead. Airbus will soon be joining the trials to provide the high-altitude test capability.

Ian decided EasyJet should get involved, because someone had to. He found out that Dr Fred knew a whole load of stuff that could have made April 2010 a relatively benign event, but nobody was listening to scientists then, least of all to Fred. It took Eyjafjallajokull to wake the authorities up. They are listening now.

EZY and Dr Fred's NILU offshoot Nicarnica Aviation, with the help of a piston-engined ultralight aircraft operated by the University of Dusseldorf, have just finished a fortnight of trials carried out in the shadow of Mt Etna, Sicily, which is always puffing out ash. Only the quantity varies. The Flight Design CT ultralight is fitted with an AVOID pod and other atmospheric sensors.Fred and crew.JPG
L-R: Uwe Post, the pilot of the Flight Design CT ultralight, Dr Fred Prata of NILU,
and Prof Konradin Weber of Dusseldorf University. The AVOID pod is below the wing on the right

Despite the sophisticated nature of the trials, the airstrip at the base of Etna that we were operating from on 6 December - Calatabiano (near Fiumefreddo north of Catania) - was charmingly basic.
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(Above) Yes, that narrow strip the other side of the hangars is the runway...


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...and (above) that's the surface near the TDZ (Etna in the background)...

There's rather a lot of terrain around too...
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...and here our intrepid explorers are setting off from Calatabiano
to sniff Etna's crater

 EZY provided us with a chopper to chase the ultralight on its mission.
Me and helicopter.JPG...so we did, and this is what we saw...

Microlight over Etna.JPGThat's Etna in the background, covered in cloud. Not the best day for seeing everything.


Etna from copter.JPG...But (above) the eyebrow window's tinted glass cuts out the glare so you can see where the ash is.

And here's a helicopter view of our return to the aerodrome...
Copter approach.JPGBut what's it all for?
Sensors 1.JPGThat's the AVOID pod. It's very expensive, making it rather unlikely that airlines will choose to fit it. But EZY is going to fit it to 20 of its A320 series fleet, and it hopes other European carriers will fit about 80 more to aircraft based around the continent. If they do, this exercise  will achieve much more than just providing tactical avoidance capability to the airframes actually fitted with AVOID.

When the next ash event happens, the crews of these aeroplanes can send back pireps telling ATC where stuff actually is. This enables comparisons to be made with the predicted location of the various densities of ash, so the predictive algorithms can be refined, and the accuracy of the surveillance picture provided by satellite sensors and ground-based lidar stations can be checked in reality.

The whole exercise is about building confidence in the total system, and continually adding to the knowledge base. So when Katla blows its top, we know how to react.

Well done EZY, Dr Fred Prata, NILU, and Prof Konradin Weber of Dusseldorf University.

In fact the whole team...
Team.JPG
Landing at the end of the day. Job done (below)
Fiumefreddo aerodrome 8.JPG





UK pilot union turf war

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On 15 November the Independent Pilots Association launched a campaign to attract British Airline Pilots Association members. The IPA was capitalising on discontent among BALPA members about the latter's handling of two disputes over the last three years.

The first was BALPA's dispute with British Airways over terms and conditions at its Open Skies subsidiary, which resulted in an expensive and comprehensive defeat for the union. BALPA's excuse is that it received poor legal advice. But Flightglobal has copies of the legal advice, and it reads like a firm statement from the union's lawyers that there were no grounds in law for the demands BALPA was making of BA, so the decision to proceed looks reckless.

More recently a dispute over conditions at Virgin Atlantic, about which members felt so strongly that they were prepared to strike, fizzled out when BALPA surprised the members by advising them to accept a company offer with which they were unhappy. Secretary general Jim McAuslan said the deal was "in the long term interests of the members," but Virgin pilots have told Flightglobal that they think the union secretariat are "so busy looking after themselves" that they don't listen to the membership. McAuslan admits there is a review ongoing about how the Virgin dispute was handled.

Meanwhile the final settlement with BA is imminent. It is likely to cost the union about £1 million.

McAuslan told Flightglobal that BALPA's job was not only to listen, but to lead, remarking that trying to win consensus was "like herding cats". He says that, following a recent survey of members' views about the union, which was broadly - but not by big margins - favourable, BALPA will be acting more as a unified organisation rather than as a federation of pilot councils at individual airlines.

BALPA has a long history and a strong brand name, but its leadership hasn't been effective for some time. Maybe the current IPA bid to take over the representation of Britain's pilots is a timely warning to McAuslan and his team.

VIDEO: How not to do risk assessment for a helicopter job

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This video demonstrates why helicopters have a high accident rate relative to fixed wing.

 

The pilot clearly didn't anticipate this outcome. Fortunately he survived it, and so did the people nearby, who could also have been killed by high velocity debris.

Let's examine the decisionmaking processes that preceded this event.

Look at the space in which the helicopter was operating. Making a sound decision about whether or not to operate there entails understanding the principles of risk management, but most pilots are not trained in it.

Neither, by and large, are the decisionmakers who run small helicopter operations.

Relatively recently, some fixed wing pilots on MPL (multi-crew pilot licence) courses have begun to be taught threat-and-error-management as a part of their training, but that is not widespread.

A mission risk level can be calculated by multiplying the level of risk (on a 1 to 5 scale) by the seriousness of the potential outcome if the worst happens.

In this case the risk of hitting an obstacle was at least 4 but probably 5, and the outcome from hitting it (total loss of helicopter, high risk of death or injury to pilot and people on the scene) is definitely 5.

25 is a big number on this scale, so don't do it. The job can be achieved by some other means.

I have just come back from the International Helicopter Safety Seminar at Fort Worth, and I reported as follows in Flight International: "The top global industry problems, according to International Helicopter Safety Team data analysis, are the lack of a risk management culture at operator level, and poor pilot judgement when an accident situation develops."

So what we have just witnessed is not a one-off, it's endemic.

The Flight International report continues: "Analysis reveals that the top solution to poor helicopter operator safety performance is the adoption of low-cost flight data monitoring (FDM) systems, coupled with training tailored to correct the problems revealed by the FDM." So when pilots make bad decisions but get away with it, you know, and can do something about it.

"Having developed this analysis, the IHST's top problem, according to FAA IHST representative Sue Gardner, is how to get these messages out to the small operators which represent more than 80% of the industry."

The poisoned chalice presented to Cranfield University

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Back in 2008, in a Comment article in Flight International, we discussed a research task that Cranfield University had been given. I quote:

"Commissioned by the UK Department for Transport, Cranfield University is carrying out scientific tests to establish what contaminants are occasionally released into airline cabins in the engine bleed air feed to the air conditioning system.

"The purpose is to establish...what the contaminants are. It is not Cranfield's job to test what effects these have on crew and passengers. That is being done elsewhere.

"The DfT has a duty beyond that of Cranfield's very able scientists. It has to look at all the other evidence that has been gathered from multiple sources over decades, and it has manifestly not been doing this.

"Cranfield's resources are limited. They have five aeroplanes on which to carry out tests, and only 20 trips each. If they get no contamination events, or only low intensity ones, what then? Will they be able to project credible conclusions on this evidence alone?"

End of quote.

That job Cranfield took on was the figurative poisoned chalice. I used those words to the late Dr Helen Muir when I heard she had been tasked with leading the Cranfield team who were to carry out the tests. We were at a Flight Safety Foundation seminar where she was being presented with an award for her groundbreaking cabin safety research.

Muir was a Cranfield academic for whom I have huge respect, and I am among thousands in the aerospace world who share admiration for her work. She died well before publication of these test results. 

The report's conclusions were uncharacteristically weasel-worded. In fact they were not conclusions at all. Not according to the dictionary definition of that word anyway. You will see in a moment what I mean.

Now a Cranfield University professor, head of the University's nanotechnology department, has taken up the baton.

On 11 September, on Cranfield's campus, Prof Jeremy Ramsden chaired an international, multidisciplinary workshop backed by Swiss independent research organisation Collegium Basilea. The subject was Inhalable Toxic Chemicals in Aircraft Cabin Air.

This is what he had to say about Cranfield's work for the DfT: "This report actually found significant concentrations of organophosphate neurotoxins and other noxious substances in cabin air even under normal flying conditions.

"Unfortunately," said Ramsden, "the final conclusion of the report is the statement: 'With respect to the conditions of flight that were experienced during the study, there was no evidence for target pollutants occurring in the cabin at levels exceeding available health and safety standards and guidelines.'

"The first phrase underlines the fact that the study failed to achieve measurement of a 'fume event', even though that was one of its principal objectives. Even for 'normal flying conditions' the purported conclusion is irrelevant because no standards are available for some of the most problematical substances. Nevertheless, despite the fact that this 'conclusion' is neither sound nor justified by the actual work carried out, it has been carelessly and uncritically quoted, including by the UK Minister for Transport Theresa Villiers, and widely used to infer that there is no safety and health problem."

Ramsden also said what he thought should be done about this situation. He added:

"The mandatory inclusion of a health warning on air tickets, as on cigarette packets, would seem to be the alternative in the face of technical inaction."

If you want to find out more, enter the word "toxic" or "cabin air contamination" in the search box for this blog and you will find plenty more material. 

Handling The Big Jet: lessons for the A380 from QF32

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Much as Qantas' Capt Richard Champion de Crespigny has praised the A380's ability to absorb massive damage and still fly safely, he says the Australian Transport Safety Bureau will provide Airbus with plenty of food for thought when it publishes the report of its investigation into the QF32 engine failure event in November last year.

It's not clear how soon publication will be, because the damage caused by the catastrophic uncontained engine failure was so extensive, and the A380 and its systems are so complex, that the primary effects of the damage would fill a thick book, but the secondary and tertiary effects could keep the ATSB busy for a lifetime if it became fixated in detail.

De Crespigny refuses to break protocol by revealing what he knows in advance of the report. But having said that, the report is scarcely going to be a surprise for Airbus, which is assisting the ATSB in the investigation, as manufacturers are obliged to do.

Some changes in the pipeline are already clear. One of the particular problems de Crespigny and his crew faced that day was the plethora of ECAM alerts: more than 60 of them.

In future, when the system is faced with multiple failures, the ECAM display will now state how many alerts there are. For example, the first of the electronically prioritised alerts on QF32 would have been labelled "No1 of 60", which would have enabled de Crespigny to decide more quickly than he actually did that this was a situation in which ordinary checklists didn't apply.

When De Crespigny realised this, he then chose to apply a reverse logic: rather than sticking to the convention of identifying and dealing with the problems (unless one of them is a fire or something that needs instant attention), the priority becomes one of  identifying and protecting the systems that are still operating.

Talking about reports, de Crespigny is writing a book. After all, Sully Sullenberger did after the Hudson River ditching, and Peter Burkill published after BA38 crash-landed at Heathrow. All three were "black swan" accidents: that is, they were caused by events that could not have been foreseen and for which there were no checklists or laid down procedures.

I have the impression that de Crespigny is thinking of filling the market space left by the fact that Handling the Big Jets (D.P. Davies), an iconic book published in 1968, was not updated beyond the early 1970s.

Things have certainly changed since then.

My colleague Max Kingsley Jones, editor of airline business, has also addressed the issue of crews being swamped with an excess of information in emergency