NTSB Investigation Animation for 2021 WMATA Train Derailment in Arlington, VA



An NTSB video animation of the derailment sequence. Visit our website for more information.

https://www.ntsb.gov/investigations/Pages/RRD22LR001.aspx

source

21 thoughts on “NTSB Investigation Animation for 2021 WMATA Train Derailment in Arlington, VA”

  1. Was the cause of the out of spec. wheel sets, usually due to the migration of, one of the wheels or both of the wheels? Are there brakes on these axles? When in use, is there a temperature difference between the axle and the wheel? When the wheels are pressed onto the axle, are any chemicals used to prevent migration (similar to a bearing retaining compound)?

    Reply
  2. it took several minutes to determine the narrator was saying "widened wheel set" – every time it sounded like "waadin wheel set" as if it was a brand name or something – slow your speaking cadence and annunciate clearly when you have such a thick regional accent like that

    Reply
  3. Why are these width checks being ignored? 30/80 total out-of-limits sets before an accident requiring fleet checks is pretty poor, not the worst, but certainly a poor show.
    Are the engineers being over stretched? Are the bean counters cutting corners? Is the importance of this check being undervalued?

    Reply

Leave a Comment