On Wednesday, the National Transportation Safety Board (NTSB) reported that a Tesla driver, involved in a June accident that resulted in a crash into a home, had pressed the accelerator to 100%, bypassing the manufacturer’s Full Self-Driving (Supervised) technology.

Data retrieved from the Tesla indicated that the car was exceeding 70 miles per hour at the time of impact in Katy, Texas, leading to the death of 76-year-old Martha Avila, according to the NTSB. The victim’s family has filed a lawsuit against the purported driver, 44-year-old Michael Butler, and Tesla, alleging negligence. Butler faces charges of manslaughter as well.

This data was shared by the safety board as part of a preliminary report regarding the ongoing investigation into the accident. The National Highway Traffic Safety Administration is also examining the situation.

The findings support Tesla’s version of events, which the company released shortly following the incident to demonstrate that its advanced driver assistance system was not at fault. Tesla CEO Elon Musk commented on X soon after the accident, stating, “[T]his [allegation] makes no sense. FSD drives slowly through neighborhood streets and this was a high speed crash!”

The NTSB indicated on Wednesday that the 44-year-old operator was utilizing Full Self-Driving (Supervised) on Rose Hollow Lane, a two-lane residential road with a 30 miles per hour speed limit, prior to the accident. Security camera footage obtained by the safety board depicted the vehicle accelerating through an intersection, veering off the road, and colliding with the residence. It was noted by the NTSB that “weather was clear, the roadway was dry, and daylight conditions were present.”

Tesla mandates that drivers using Full Self-Driving (Supervised) remain attentive to the road and be prepared to regain control at a moment’s notice. Butler allegedly informed authorities that he had “passed out” and that he was using Tesla’s driver assistance system. Reports from local ABC news affiliate KTRK TV revealed that police found his Google searches included phrases like “Tesla FSD not aggressive enough 2026,” “Tesla not aggressive enough,” and “Tesla FSD too timid.”