Mechanical Fatigue Caused Parts to Fall From Trains: Post

Friction rings twice fell off rail cars ahead of their time

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    Metro has learned what caused some brake parts to fall trains and cause major delays earlier this year.

    According to a report by The Washington Post, "mechanical fatigue" caused the friction rings to fall off the rail cars before their intended lifespan.

    One ring fell off in December, damaging two cars and delaying service for hours on the Orange and Blue lines.

    Another fell off in January near the Stadium-Armory Station.