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Context of '(Between 9:30-10:00 a.m.) September 11, 2001: Cockpit Voice Recording Begins'

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Key events of Flight 93 (times are based on a Pittsburgh Post-Gazette map and otherwise interopolated).Key events of Flight 93 (times are based on a Pittsburgh Post-Gazette map and otherwise interopolated). [Source: Yvonne Vermillion/ MagicGraphix.com] (click image to enlarge)Apparently, the only cockpit voice recording recovered undamaged from any of the 9/11 crashes is from Flight 93. It recorded on a 30-minute reel, which means that the tape is continually overwritten and only the final 30 minutes of any flight is recorded, though in practice sometimes the tape is slightly longer. Flight 93’s recording lasts 31 minutes and begins at this time. [Longman, 2002, pp. 206-207; CNN, 4/19/2002; Hartford Courant, 4/19/2004] According to one account, it begins seconds before the plane is hijacked. [Washington Post, 11/17/2001] However, the version of the tape later played for the victims’ relatives begins “too late to pick up the sounds of the hijackers’ initial takeover.” [MSNBC, 4/18/2002]

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

One of the hijackers in the cockpit asks if anything is going on, apparently meaning outside the cockpit. “Fighting,” the other says. [Longman, 2002, pp. 210] An analysis of the cockpit flight recording suggests that the passenger struggle actually starts in the front of the plane (where Mark Bingham and Tom Burnett are sitting) about a minute before a struggle in the back of the plane (where Todd Beamer is sitting). [Observer, 12/2/2001] Officials later theorize that the Flight 93 passengers reach the cockpit using a food cart as a battering ram and a shield. They claim digital enhancement of the cockpit voice recorder reveals the sound of plates and glassware crashing around 9:57 a.m. [Newsweek, 12/3/2001]

Entity Tags: Todd Beamer, Mark Bingham, Tom Burnett

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

The cockpit voice recording of Flight 93 was recorded on a 30-minute reel, which means that the tape is continually overwritten and only the final 30 minutes of any flight would be recorded. The government later permits relatives to hear this tape. Apparently, the version of the tape played to the family members begins at 9:31 a.m. and runs for 31 minutes, ending one minute before, according to the government, the plane crashes. [Longman, 2002, pp. 206-207; CNN, 4/19/2002] The New York Observer comments, “Some of the relatives are keen to find out why, at the peak of this struggle, the tape suddenly stops recording voices and all that is heard in the last 60 seconds or so is engine noise. Had the tape been tampered with?” [New York Observer, 6/20/2004]

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

The FBI reveals that it knows what is on the Flight 93 black boxes, but refuses to release the transcript or audio recording. Families of the victims have requested to hear the cockpit voice recording, but the FBI says, “[W]e do not believe that the horror captured on the cockpit voice recording will console them in any way.” [CNN, 12/21/2001] Accuracy in Media immediately submits a Freedom of Information Act request to have the transcript released, but the FBI turns it down because a release “could reasonably be expected to interfere with enforcement proceedings.” The Philadelphia Daily News asks, “What enforcement proceedings?” and suggests the FBI may be covering up a shootdown of the plane. [Philadelphia Daily News, 12/28/2001] The recordings are later played, but only in private to victims’ relatives and the 9/11 Commission.

Entity Tags: 9/11 Commission, Federal Bureau of Investigation

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

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