Cockpit voice recorders are amazingly hardened bits of tech.They are often kept in the back of the plane, so as to better survive a crash, but their audio comes from a microphone usually found on ...

NTSB released an image of the cockpit voice recorder (CVR) of the Learjet 55 that crashed on Jan. 31 in Philadelphia. The CVR was located at the site of initial impact, at a depth of 8 feet.

The cockpit voice recorder on the Learjet 55 that crashed in Northeast Philadelphia on Jan. 31 had not captured audio on flights for 'several years' before the aircraft went down near the ...

And while the doomed Learjet 55 was in contact with an air traffic control tower, "there were no distress calls received from the flight crew," the report said.