It’s unpleasant but little different from the fumes you occasionally breathe in your car while stuck in traffic.If passengers have one very legitimate gripe, it’s about dryness. The entire vessel is pressurized equally from front to back. High efficiency particulate air (HEPA), originally called high-efficiency particulate absorber but also sometimes called high-efficiency particulate arresting or high-efficiency particulate arrestance, is a type of air filter. It’s just a matter of time before this happens in America, if it hasn’t already. The rest happens automatically. How easy it would be, I thought, for that tiny stowaway to escape into the terminal and bite somebody. It normally lasts only a minute or so, until the engine is running and stabilized. While the air is clean, the dryness is bad for sinuses and can break down mucous barriers, making it easier to catch what bugs might be present. The AC units are known to pilots as “packs.” That’s an acronym for pneumatic air cycle kit. Coronavirus: Air as pure as an operating theatre – when grounded aircraft return to the air, airlines need to be proactive in downplaying the chances of catching viruses onboardAsian countries dominate among those with the most citizens confident in travelling in the ‘new normal’ where contactless experiences dictate sentimentBow-Tie Briefing – never give up, never despair (Part 2)Time could be a defining aspect of the future business traveller concept, but can proposed new supersonic transports deliver without the environmental problems that plagued their predecessors?With travel volumes being reduced dramatically now is the best time ever to introduce a green travel policy and make it an integral part of the travel programme before volumes start growing againConsumers are evolving the way they spend their time and money and showing a willingness for future travel, safe dining options, and socially distanced leisure activitiesThe changing competitive landscape: rebuilding Australia’s domestic market and the changing nature of the travel management companyVideo of the week – Towards the ‘new normal’ travel programme: perspectives from around the worldVideo of the week – Level playing field! An aircraft fuselage does not contain separate compartments with different pressure values. We have all returned from a business meeting or holiday and days later blamed aircraft air conditioning for giving us a cough or cold. Even though the air in a aeroplane’s cabin is partially recycled, it’s actually among the cleanest around. I needn’t be reminded that hospitals are notorious viral incubators, but Boeing says that between 94 and 99.9 percent of airborne microbes are captured, and there’s a total changeover of air every two or three minutes — far more frequently than occurs in offices, movie theaters, or classrooms. The research showed the potential for passengers to pick up and spread infections through “hot spots” like airport security and this could be especially important during an international outbreak of disease or a pandemic. First, to amply humidify a jetliner would take large quantities of water, which is heavy and therefore expensive to carry. There is no direct scientific evidence of benefit, but some reduced exposure can reasonably be inferred based on the ability of some filters to remove relevant-sized particles and droplets. Commercial aircraft cabin air filters are available through Pall's authorized airline distributor, Satair A/S, www.satair.com. Case in point: the following is from a 2009 issue of To start with, pilots cannot tinker with a plane’s air-conditioning systems to modify the ratio of fresh to recirculated air. Alexandre de Juniac, director general and CEO of International Air Transport Association (IATA) highlighted just that when he spoke at the CAPA Qatar Aviation, Aeropolitical & Regulatory Summit in Doha earlier this year when COVID-19 was still in its infancy, largely restricted to just mainland China.There have been studies that show that if you are unfortunate enough to be sat next to anyone who has such a virus and that person coughs or sneezes all over you there is a very good chance you will catch it; that goes without saying. Therefore, aircraft could actually be seen as a way to control the spread of viruses.Once again this is a story of an industry perhaps failing to educate the travelling public on the extensive measures it has in place to make air travel safe. Compressed air is very hot, but the compressors only compress; there is no contact with combustion gasses. High-efficiency particulate air (HEPA), also known as high-efficiency particulate absorbing and high-efficiency particulate arrestance, is an efficiency standard of air filter.. Filters meeting the HEPA standard must satisfy certain levels of efficiency. Filters meeting the HEPA standard have many applications, including use in clean rooms for IC fabrication, medical facilities, automobiles, aircraft and homes. It is instructive, fascinating, and frankly a little scary to see just how efficiently global air travel can spread pathogens from continent to continent.And while I’ve got your attention, how about the myth claiming that pilots reduce oxygen levels to keep passengers docile?Oxygen levels are determined by pressurization, and almost never are the pressurization controls tinkered with during cruise unless there’s a malfunction. As air travel demand drops through the floor due to a mixture of passenger confidence and more recently travel restrictions, a small but growing number of dissenting voices are questioning the perceived wisdom that coronavirus can be caught within the aircraft cabin.

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