Prosecutors claiming the crash of Germanwings Flight 9525 was deliberate revealed on Thursday a chilling piece of evidence.
Co-pilot Andreas Lubitz, 27, whom investigators believe locked the captain out of the cockpit before putting the plane into a fatal descent, had researched the doors’ security on his iPad before the March 24 crash, investigators said. The discovery has heightened concerns about whether locked cockpit doors — fortified and enforced in the wake of 9/11 — are more dangerous than they are safe.
The debate, however, is nothing new. For decades, aviation officials have struggled with the paradox of a cockpit that is both secure, in the event of a threat from outside, and accessible, in the event of a threat from within. As a result, many planes — including the Germanwings jet — now have emergency codes to enter the cockpit, which are known only by the flight crew, according…
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