A recycling company owner accused of rigging a dump truck with bad brakes and then trying to reinstate insurance coverage after a fatal 2005 crash on a Connecticut mountain has pleaded guilty to manslaughter.

Seventy-three-year-old David Wilcox of Windsor entered the plea as jury selection was set to begin for the crash that killed four people on Avon Mountain on July 29, 2005. Wilcox ran Bloomfield-based American Crushing & Recycling.

Prosecutors say he allowed defective brake parts on the truck, which lost control and slammed into 19 other vehicles stopped for a traffic signal at the foot of Avon Mountain.

Wilcox pleaded guilty to four counts of second-degree manslaughter, five counts of first-degree assault and no contest to insurance fraud. He faces six years in prison.