TMZ Sports obtained the Picabo Street 911 call -- in which the Olympic legend claims her father slapped her and pulled out her hair before she fought back ... and pushed him down a flight of stairs.
The 44-year-old was arrested for assault and domestic violence for attacking her 76-year-old dad at her home in Utah back in December -- but during the call, it's clear Street is claiming self defense.
"My father just started attacking me in my own house in front of my children," the gold medal winning skier told the operator.
Street says the whole thing started after her dad accidentally crashed his car into her home -- and an argument ensued.