I could not scroll to find one of the relevant threads to update. I encourage those with proper browser support to paste the link there.
Here is the page with the released docket information, which contains over 3100 pages of data concerning the accident.
https://data.ntsb.gov/Docket/?NTSBNumber=RRD21MR017
Thirty one hundred pages of data? I might have looked at this report with interest but it they can't get to the point quickly or put out at least a Cliff's Notes edition forget it, I've got better things to do.
As Abe Lincoln once put it:
"When I send a man to inspect a horse I'm thinking of buying I just want to know the points, not how many hairs are in the mane and tail!"
One reason for the large number of pages is that there are numerous documents filed in that docket that serve merely as background data for the route where this occurred. Stuff like train counts, tonnage, track charts, employee timetable, etc.
Other documents deal with conditions of the track, wheels, PTC, etc., at the time of the accident.
If anyone chooses to read through just a handful of the documents, I highly recommend the crew member interviews. Go here, and scroll down to items 99 thru 102:
OvermodI could not scroll to find one of the relevant threads to update. I encourage those with proper browser support to paste the link there. Here is the page with the released docket information, which contains over 3100 pages of data concerning the accident. https://data.ntsb.gov/Docket/?NTSBNumber=RRD21MR017
If you can't impress them with your brilliance, baffle them with your BS - in mass quantities.
Never too old to have a happy childhood!
Page 11 of On Board Image Recorder is critical
Thanks for the link :)
ok thanks :)
NTSB announced cause was a progressive misalignment of track. The images from each of the various trains that proceeded #7 + #7 detected that fault. Have to wonder if the camera images could be programmed to alert that a misalignment was in the track ahead?
Maybe newer cameras with higher resolution would be needed? If this is possible maybe an earlier train would have noted the progressive misalignment?
The major point of the NTSB report was that it was not the progressing lateral shift alone that was the cause of the accident. Rail wear at joints sufficient to cause sharp flange strike was a major factor, as appears to be subsidence in the subgrade around the point of the accident (the latter surviving the substantial BNSF regrading and rebuilding with CWR).
https://www.railwayage.com/regulatory/ntsb-poor-track-conditions-led-to-2021-empire-builder-derailment/
It appears to me that 3 people died because of BNSF's inadequate track maintenance.
NTSB suggested that they might try to do better.
Wouldn't want to hurt anyone's feelings.
Ed
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