TORONTO - The Toronto Transit Commission has been fined $200,000 for the death of a repair crew worker.

The TTC pleaded guilty Tuesday in court to an Occupational Health and Safety Act violation.

The accident occurred on the morning of April 23, 2007, when a crew was working in a subway tunnel between stations to remove asbestos.

The crew was using a system of work platforms on a flatbed car, but when they finished the job, one of the platforms wasn't retracted fully.

As the work car rolled down the track, the extended platform caught on a bundle of cables, hit the wall and rose out of its mounting holes.

It then hit the tunnel and flipped into the front of a car, killing the train operator.