The Aerotoxic Logbook (ATLB) in English (EN)

The problem has been known since the 1950s - roughly 70 years and nothing has ever been done about it.  The air in the cabin is still ‚bled off’ (the engines) in airplanes - with the well-known possible consequences for flight safety and health, in particular that of  flight crew. We have the cultural history on 'Flying is safe' and the ongoing problems investigated at (EN).

Although the cabin air is 50% re-circulated in modern aircraft types, the basic problem remains unsolved. With one exception: the Boeing B787.  This is/was also the state of knowledge at the first big conference on this topic in London in September 2017. The presentations can now be viewed here:  

There are many reasons why no solutions are found: the targeted influencing of scientific discussions, the airlines’ economic interests, the links between politics and air transport industry and other reasons.

The ‚Aerotoxic Logbook’, launched in January 2017, is a first comprehensive documentation addressing the problem of potentially contaminated cabin air ( - German) and documents what is happening in this area.  Or, what is not happening. And why not. This German language blog ( is now also available in English and can be accessed directly via this permalink:

The information we collect in German is translated by Bearnairdine BEAUMONT who operates the network  and the blog

With the ‚Aerotoxic Logbook’ we want to achieve international networking,  bringing together all initiatives and activities to communicate about this unsolved problem and to initiate solutions. At the same time it is a scientific experiment: What must happen before a problem is addressed?

Other initiatives providing information on the contaminated air issue you can get here (right side).

30 January 2020

EASA focuses on "cabin air "

Two days of lectures and discussions you can read about here in the official program booklet.

Not invited to give a presentation were the German (Fume-Event) Patient Initiative, nor Michael MULDER from IKAROS, Amsterdam.

However, Cpt. John HOYTE, the founder of and once a pilot himself, was allowed to share his experiences with injured parties. Read his press release

The two-day hearing can be summarised as follows: The European Aviation Safety Authority, which primarily gives the floor to representatives of the companies and interest groups concerned, who then also dominate the political discussion, sees no need for further measures.

End of January

Survey of Dutch Frequent Flyers

As we have learned, the Institution Aviation Medical Consult (AMC) conducted a survey in 2017 among 100,000 people, including frequent flyers of which 500 had flown at least six times in the last 12 months.

The survey results reveal the suspected phenomenon that not only flight personnel are at risk, but also all those who regularly use the aircraft for professional reasons as a means of transport: Study on the perception and prevention of health complaints in Frequent Flyers.

28 January 2020

Cabin Air as a topic at "Report Mainz" (Public Broadcast TV)

Prof. Dr-Ing. Dieter SCHOLZ from the HAW/Hamburg has long emphasized that the bleed air technology is a "faulty design". He previously worked for Airbus and has represented the subjects of aircraft construction, aircraft systems and flight mechanics for many years. He knows what he is talking about, and is now one of the very few people who are involved in this field.

He shows the difference by comparing two air pipes ("ducts"): Bleed air leaves a black and greasy film which is deposited in the pipes and flows through the air for the cabin. And this already is due to the normal low-level contamination with pyrolyzed turbine oil residues. The air pipes on the "Ram Air" and "Fan Air", on the other hand, are flawless.

Prof. SCHOLZ, who appears in this film contribution, has provided the film with English and German subtitles and uploaded it on YouTube.

TV contributions intended for public discussion and opinion-making are usually deleted within a specific time limit.  The links to the broadcast script and the video can be viewed here: We have archived both so that it can't be lost: "Do toxic gases in aeroplanes harm personnel and passengers?"

The news magazine Focus took up this topic the next day.

16 January 2020

Measurements in Airplanes

Four short videos went online on the Aerotoxic Team website:

Measurements by passengers in four different aircraft: a Lufthansa Airbus 320, an Iberia Airbus 320neo, a Qatar B777-300 and an aircraft of unknown type.


Two short clips with smoke in the cabin: on Ryanair  in January 2020 and on a British Airways flight in August last year

All six clips at

Mid-January 2020


Doctors, i.e. neuropathologists from the University of Amsterdam, have now proven, based on the autopsy of 15 deceased persons, that there is quite obviously a connection between long-term and weak exposure to cabin air and damage to the brain, heart and peripheral nervous system. The same symptoms were observed in all autopsies:

Permanent contamination of the cabin air is the rule, especially when so-called labyrinth seals (which leak) are used, and was proven by Prof. Dieter SCHOLZ some time ago: Aircraft Cabinair and Engine Oil - A Systems Engineering View (27 April 2017).

There are currently agreements with 50 (living) flight crews and frequent flyers who (can) supplement the previous findings and results by agreeing to have a particular "post-mortem protocol" done after their death. The comparison group has equal numbers.

The foundation has been in existence since 2018 and has now decided to go public. A website has gone online for this purpose:

The board of directors of IKAROS is formed by

  • Prof. Dick SWAAB, a neurobiologist at the University of Amsterdam and long-standing director of the Netherlands Institute for Brain Research.
  • Michel MULDER MD, a former KLM pilot and (FAA) aero-medical doctor, who stopped flying when he felt changes in his body.
  • Frank CANNON, an attorney, specialized in aviation law and a former pilot, still volunteering as a rescue pilot for the Order of St. John.

All persons who know about deceased aircraft crews can get advice here: info[at]