Chemistry

July 27, 2012 - 11:51am
F-22 at Andrews

The U.S. Air Force will gradually lift flight restrictions placed on its Lockheed Martin F-22 Raptor fleet in response to unexplained incidents of hypoxia, or oxygen deprivation, experienced by pilots dating as far back as 2008.

July 25, 2012 - 1:48pm

The FAA has issued an airworthiness directive for certain Bombardier Challenger 300s as a result of reports of deformation found at the neck of the pressure regulator body on the oxygen cylinder and regulator assembly (CRA). It requires an inspection to determine if a specified oxygen CRA is installed and to replace affected oxygen CRAs.

July 10, 2012 - 7:00pm

Russia’s VSMPO-AVISMA Corp., specialist manufacturer of products made of titanium and aluminum alloys, steel and nickel, and Shanghai Aircraft Manufacturing Co. (SAMC), have signed a long-term purchase contract for titanium forging products for the Comac C919 aircraft program.

April 9, 2012 - 10:40am
Constellium aluminum alloy

Aluminum product developer Constellium wants to increase the percentage of recycled metal it produces for aerospace in a bid to realize both economic and environmental goals. The value of such alloys has grown with the addition of elements such as copper, silver and—critically—lithium. One kilogram (2.2 pounds) of aluminum costs about $2, while one kilogram of lithium—the lightest metal in nature—costs $100.

March 30, 2012 - 11:45am
Retired Air Force Gen. Gregory Martin

A seven-month investigation by the U.S. Air Force Scientific Advisory Board into unexplained hypoxia, or oxygen deprivation, incidents experienced by F-22 pilots has not determined the root cause of the problem, the service said March 29. The investigation did produce a number of safety recommendations, and the Air Force continues to study the problem.

March 13, 2012 - 4:00pm

Environmental group Friends of the Earth filed a lawsuit against the Environmental Protection Agency (EPA), charging the agency with failure to respond to its 2006 petition requesting the regulation of lead emissions from GA aircraft under the Clean Air Act. In the petition, the group asked the EPA to rule that emissions from aircraft that burn leaded fuel may pose a threat to public health. According to the group, nearly six years later, there has been no final action from the agency.

February 10, 2012 - 6:55am

Aero Sekur (Booth No. 8043), which specializes in safety systems and advanced flexible structures for the aerospace and defense markets, is displaying a range of helicopter safety products at Heli-Expo’12.

February 1, 2012 - 5:15am
Lithium-ion batteries power nearly every portable device pilots and passengers c

The photo of a badly burned Apple iPhone that circulated after the phone caught fire during a Regional Express flight has raised important questions about lithium-ion battery safety among a wide aviation audience. The incident occurred after the Regional Express Saab 340B landed in Sydney, Australia, on Nov.

February 1, 2012 - 5:13am
Firefighters douse a blaze on board a UPS DC-8 at Philadelphia International. Li

The prospect of one laptop computer or smartphone erupting into lithium-battery-fed flames is daunting enough, but what about a pallet of lithium batteries carried as cargo? Some fiery accidents have been blamed on just that, and so far authorities have done little to prevent this type of accident from recurring.

January 3, 2012 - 9:54am
More than 100 aircraft crowded onto the static display at November’s Dubai Air S

Business aviation in the Middle East is expected to keep growing at a faster rate than that seen in North America and Europe, but slower than the more dynamic expansion now being seen in the emerging markets of Asia. This is the broad consensus among manufacturers and service providers for a region that is emerging from a somewhat unsettled two-year period that has seen fallout from wider economic problems and the so-called Arab Spring political unrest.

 
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