Britt Reid -- Andy Reid's son and a former assistant on the Chiefs' coaching staff -- has been hit with a felony DWI charge stemming from his role in a violent Feb. car crash ... law enforcement announced Monday.
In court docs, prosecutors said they've officially levied a "Dwi - Serious Physical Injury" charge on the 35-year-old. If convicted, Britt faces up to 7 years behind bars.
As we previously reported, Britt was involved in a bad 3-car crash near Arrowhead Stadium in Kansas City back on Feb.