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===Flight recorders=== [[File:Flight 77 CVR.jpg|right|thumb|alt=The cockpit voice recorder from American Airlines Flight 77, as used in an exhibit at the Moussaoui trial|The [[cockpit voice recorder]] from American Airlines Flight{{spaces}}77, as used in an exhibit at the [[Zacarias Moussaoui#Trial and sentencing|Moussaoui trial]]]] About 03:40 on September 14, a paramedic and a firefighter who were searching through the debris of the impact site found two dark boxes, about {{convert|1.5|by|2|ft|cm}} long. They called for an FBI agent, who in turn called for someone from the [[National Transportation Safety Board]] (NTSB). The NTSB employee confirmed that these were the flight recorders ("black boxes") from American Airlines Flight{{spaces}}77.<ref>{{cite news |url=http://msnbc.msn.com/id/3069699/ |title=Washington's Heroes: On the ground at the Pentagon on Sept. 11 |access-date=November 2, 2009 |last=Rosenberg |first=Debra |date=September 28, 2001 |publisher=MSNBC |url-status=dead |archive-url=https://web.archive.org/web/20040526034459/http://msnbc.msn.com/id/3069699/ |archive-date=May 26, 2004}}</ref> Dick Bridges, deputy manager for Arlington County, Virginia, said the [[cockpit voice recorder]] was damaged on the outside and the [[flight data recorder]] was charred. Bridges said the recorders were found "right where the plane came into the building".<ref name="usatoday30-atoday-blackboxes">{{cite news |url=http://usatoday30.usatoday.com/news/nation/2001/09/14/pentagon-fire.htm |title=Searchers find Pentagon black boxes |agency=Associated Press |work=USA Today |date=September 14, 2001 |access-date=February 8, 2015 |archive-date=November 8, 2014 |archive-url=https://web.archive.org/web/20141108113519/http://usatoday30.usatoday.com/news/nation/2001/09/14/pentagon-fire.htm |url-status=live}}</ref> The cockpit voice recorder was transported to the NTSB lab in Washington, D.C., to see what data was salvageable. In its report, the NTSB identified the unit as an L-3 Communications, Fairchild Aviation Recorders model A-100A cockpit voice recorder{{snd}}a device which records on [[magnetic tape]]. There were several loose pieces of magnetic tape that were found lying inside of the tape enclosure. No usable segments of tape were found inside the recorder; according to the NTSB's report, "[t]he majority of the recording tape was fused into a solid block of charred plastic".<ref>{{cite web |title=Specialist's Factual Report of Investigation: Cockpit Voice Recorder |date=April 30, 2002 |url=https://www.scribd.com/doc/14780831/T8-B18-NTSB-Documents-1-of-3-Fdr-CVR-Cockpit-Voice-Recorder-Reports-AA-77-and-UA-93-Paperclipped-Together260 |work=National Transportation Safety Board |access-date=November 2, 2009 |archive-url=https://web.archive.org/web/20140411193816/http://www.scribd.com/doc/14780831/T8-B18-NTSB-Documents-1-of-3-Fdr-CVR-Cockpit-Voice-Recorder-Reports-AA-77-and-UA-93-Paperclipped-Together260 |archive-date=April 11, 2014}}</ref> On the other hand, all the data from the flight data recorder, which used a [[solid-state drive]], was recovered.<ref>{{cite web |url=https://www.ntsb.gov/doclib/foia/9_11/AAL77_fdr.pdf |title=Specialist's Factual Report of Investigation: Digital Flight Data Recorder |date=January 31, 2002 |access-date=February 28, 2014 |publisher=[[NTSB]] |archive-url=https://web.archive.org/web/20121010093205/https://www.ntsb.gov/doclib/foia/9_11/AAL77_fdr.pdf |archive-date=October 10, 2012}}</ref>
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