Trump’s plan to scrap the Chemical Safety and Hazard Investigation Board is unpopular with just about everyone — including ...

Chemical oxygen generators in passenger aircraft have a limited useful life and must be periodically replaced. Even after their expiration dates, they remain potentially hazardous materials.

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At the time of the test (early 1970s), the increase of large aircraft in the airspace was causing in-flight hazards for general aviation pilots”, NASA’s spokesperson said.