Investigators late Friday found the cockpit voice recorder of hijacked United Airlines Flight 93 which crashed in southwestern Pennsylvania, killing all 45 aboard, the FBI announced.
The second "black box" was found at 8:30 p.m. (0030 GMT) in the crater caused by the fiery crash at a depth of about eight meters (25 feet), FBI spokeswoman Linda Vizi told reporters outside Shanksville, Pennsylvania, where the plane came down on Tuesday.
Investigators said the cockpit voice recorder had been sent to Washington to the headquarters of the National Transportation Safety Board (NTSB) for evaluation.
The flight data recorder had already been recovered on Thursday.
The Boeing 757, which had been en route from Newark, New Jersey, to San Francisco, was one of four planes hijacked Tuesday in the worst terrorist attack in US history, with thousands presumed dead in New York, Washington and Pennsylvania.
United Airlines Flight 29 had been heading west near Cleveland over the state of Ohio when it suddenly turned back in the direction it came from, eventually spiraling to the ground at 10:06 am (1406 GMT) just north of the town of Shanksville.
It was the only one of the four that apparently did not reach its intended target as the hijackers crashed the other planes into the twin towers of the World Trade Center in New York and the Pentagon military headquarters in Washington -- WASHINGTON (AFP
