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A NewsChannel 5 investigation exposed a problem with flammable materials on hundreds of airliners that you and I fly.
But if you think the government has fixed the problem, think again.
As our chief investigative reporter Phil Williams discovered, that won't happen for a long time.
At the center of the questions: video obtained by NewsChannel 5 Investigates from the government's own files.
It shows how easily insulation found on hundreds of airliners could literally go up in flames. And other video shows how those flames could spread throughout the attic of an airliner.
"They know about a problem but they resist acting," safety advocate Mary Schiavo told Williams last year. Schiavo once served as the inspector general for the U.S. Department of Transportation, which includes the Federal Aviation Administration.
"Unfortunately, they resist acting because, well, to put it into their words, they don't have a body count."
The insulation -- known as AN-26 -- lines hundreds of older Boeing aircraft still flying today.
"a small ignition source, such as an electrical arc, could easily ignite this material and the fire would propagate on the material until the material was consumed. Flames from the AN-26 were capable of igniting other aircraft materials and, in a cascading fashion, cause a catastrophic fire."