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NTSB: Engineer's cellphone used day of crash, not sure when
Author: R.I.
Date: 05-21-2015 - 14:54

"Still, the NTSB said, investigators have not determined exactly when the phone was used, and the process for reaching such conclusions is lengthy, involving the verification of time stamps across various data sources." (This is regarding the cell phone of Mr. Bostian, the engineer in the Philadelphia Amtrak derailment.)

I thought cell phone systems were tied into the NIST US Time out of Boulder, CO, and thus any time stamps would be very reliable and immediately authoritative. What am I missing?

[www.philly.com]

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Subject Written By Date/Time (PST)
  NTSB: Engineer's cellphone used day of crash, not sure when R.I. 05-21-2015 - 14:54
  Re: NTSB: Engineer's cellphone used day of crash, not sure when Nudge 05-21-2015 - 18:37
  Re: NTSB: Engineer's cellphone used day of crash, not sure when Kcjones 05-21-2015 - 19:52
  Re: NTSB: Engineer's cellphone used day of crash, not sure when Northern Snowman 05-21-2015 - 20:10
  Re: NTSB: Engineer's cellphone used day of crash, not sure when Brad 05-21-2015 - 21:16
  Re: NTSB: Engineer's cellphone used day of crash, not sure when Mark 05-21-2015 - 22:34


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