With the release of the NTSB docket, Metro is detailing the issue with the 7000-series wheelsets and how it plans to proceed. https://www.wmata.com/about/news/Metro- ... ervice.cfm. The error is attributed to "a technical issue -- microslip due to reduction in contact pressure". The solution will be to re-press all wheelsets: "an increase to the fit and press tonnage used to mount rail wheels onto axles is required for the 7Ks. As a preliminary estimate, it will take up to 36 months at a cost of approximately $55 million to repress all 7K wheels."
Living in Broadlands, VA; Working at Half & L SE, DC.
