Alarmed by a report a decade ago that one of its airbags had ruptured and spewed metal debris at a driver in Alabama, the Japanese manufacturer Takata secretly conducted tests on 50 airbags it retrieved from scrapyards, according to two former employees involved in the tests, one of whom was a senior member of its testing lab.
The steel inflaters in two of the airbags cracked during the tests, a condition that can lead to rupture, the former employees said. The result was so startling that engineers began designing possible fixes in preparation for a recall, the former employees said.
