Since the 1950s pressurised aircraft cabin air has been drawn unfiltered from the compressor section of turbine jet engines as 'bleed air'. Therefore emissions from engine bearing chamber oil seals leads to contamination of the breathable cabin air. The synthetic jet oil lubricants contain a number of hazardous substances including the antiwear additive,tricresyl phosphate (TCP), an organophosphate (OP) which has many isomers, some of which bind to esterases in the manner of pesticides/nerve gases. The oil when exposed to the very high temperatures in the compressor generates a wide range of pyrolysed substances. Oil seals are reported to produce a noticeable fume event in the cabin in 1 per 100 flights (1%) . However, to function oil seals 'weep' lubricant at varying stages of normal engine operation , so exposure to the oil contaminants will be occurring in normal flight. These substances are being identified at low levels in ad-hoc studies. Reports of adverse effects specifically related to the aircraft environment have continued since the early 1950s . Short and long-term effects primarily involve irritant, sensitising, neurological, neuropsychological, respiratory, cardiovascular and other general effects. Exposure to contaminated aircraft bleed air, related to leaking oil or hydraulic fluids or de-icing fluids, represents a unique flight safety and occupational/public health issue that must be addressed. Solutions do exist to reduce and eliminate contamination and must be addressed at an industry-wide international level.
- COT (2007) COT Statement 2007/06. Statement On The Review Of The Cabin Air Environment, Ill-health In Aircraft Crews And The Possible Relationship To Smoke/Fume Events In Aircraft. London: Committee Of Toxicity.
- Michaelis, S. (2016) ‘Oil Bearing Seals and Aircraft Cabin Air Contamination’. Sealing Technology. April 2016 www.sealingtechnology.info
- Michaelis, S. (2011) PhD Thesis. 'Health And Flight Safety Implications From Exposure To Contaminated Air In Aircraft’. http://handle.unsw.edu.au/1959.4/50342
There are a range of ways in which individuals or organisations can seek expert guidance on the topic of cabin air quality. These include expert consultancy services, adapted to suit the individual, expert or organisation or a number of self-help methods as outlined below:
Consultancy service available on request:
Dr. Susan Michaelis (PhD) is uniquely qualified to provide concise and high quality support regarding the various aspects of exposure to aircraft contaminated air. These involve the following areas: Aerotoxic syndrome; overview of contaminated air issue and global actions; applicable aviation/OHS regulations; hazardous substances associated with bleed air contamination; risk and hazard assessment; fume events training and reporting requirements; available solutions; support for airlines; manufacturers; medical and legal experts; academics and scientists; unions; governments and regulators.
Rates will be provided upon request ranging from aircrew individual consultancy to consultancy available for relevant industry organisations.
B. Self help
1. Read some of the available published papers available:
Michaelis S. (2005) – Crew effects from toxic exposures on aircraft
Michaelis S. (2011) – Contaminated aircraft cabin air
Michaelis S. (2014) – Is it time to act?
FAA – Aerospace Toxicology: An Overview (pp 27-29)
Burdon J. (2011) – The “Aerotoxic Syndrome” — real condition or flight of fancy?
Harrison V. (2015) – An emerging concern: Toxic fumes in airplane cabins
Further reading available on GCAQE health page: http://gcaqe.org/health-info/
2. Watch the documentaries and film available on the cabin air issue by visiting these links:
3. Read PhD (2010): UNSW PHd
PhD Susan Michaelis (2011) "Health and Flight Safety Implications from Exposure to Contaminated Air in Aircraft". ISBN: 978-0-95-554377-7 Further details on how to obtain printed copy and an overview are available by clicking here.
4. Read MSc (2016): Cranfield MSc Thesis
Michaelis, S. (2016) "Implementation Of The Requirements For The Provision Of Clean Air In Crew And Passenger Compartments Using The Aircraft Bleed Air System", Cranfield University, UK.
SMS Safety Case
A unique opportunity is available for airline management to work with Dr. Susan Michaelis and global aviation hazards expert, Cliff Edwards, to develop a safety case based upon oil fumes in the cabin. The bow tie technique will be used to demonstrate mitigation of risks associated with oil fumes in the cabin. Further information can be found here.
ICAO based fume events training
Dr. Susan Michaelis and her team are uniquely qualified to undertake training outlined in the ICAO “Cir 344-AN/202 Guidelines on Education, Training and Reporting practices Related to Fume events”. Course can be tailored as required for aircrew, maintenance personnel, management and regulators. Further information can be found here.
Susan is in a unique position to deliver an informative content driven global approach to an activity which touches almost all of us, combined with her inspirational personal story of overcoming adversity. We all take air travel and safe arrival at our destination for granted. However Susan’s two decades unravelling of one of the airline industry’s most ignored issues will capture your attention and is a message you need to hear before you next fly.
Susan’s message is unique and one that corporate managers, safety professionals through to the travelling public will be left thinking about.Presentation topics:
- Susan’s journey: Pilot to global expert
- Aircraft contaminated air: You can make a difference
- Corporate regulation?
- History repeats itself
Legal expert consultancy
Dr. Susan Michaelis’s expertise and knowledge on the aircraft contaminated air issue is second to none. Her in-depth knowledge of almost every aspect will assist your case. Do not make the mistakes others have made and take on a case unprepared and unaware of the key issues and supporting evidence. The evidence is clearly available and is essential knowledge for anyone involved in contaminated air cases.
Dr. Michaelis’s background as a commercial pilot, PhD qualifications on the contaminated air topic and related expertise, along with her in-depth knowledge of all the key parties and their role, make her unique in this field.
As identified by the Lawsuit Coach (http://lawsuitcoach.com/), ensure you are undertaking a ‘winnable’ case by being prepared.
Link to the World Health Organization Journal, Public Health Panorama. June 2017
Michaelis, S. (2011) PhD Thesis - "Health and Flight Safety Implications from Exposure to Contaminated Air in Aircraft ". ISBN: 978-0- 95-554377-7
Available to purchase in hardback: (690 pages, 2kg) - £135 plus p&p - To request all inclusive quote email firstname.lastname@example.org
Michaelis, S. (2007) "Aviation Contaminated Air Reference Manual". ISBN 9780955567209
Available to purchase in hardback: (844 pages, 2kg) - £110 plus p&p - To request all inclusive quote email email@example.com