On July 8, NHTSA submitted an information request to Matthew Schwall, Tesla’s director of field performance engineering, requesting data from Tesla as part of the NHTSA investigation into Autopilot that was due August 26.

The document requests that Tesla state how many alleged defects the company is aware of that relate to Forward Collision Warning or Automatic Emergency Braking. It also asks for any tests Tesla has done or plans to do of those two Autopilot systems as well as any changes Tesla may have made that could result in the alleged defect.

Tesla did not complete the information request on time, asking NHTSA for a one-week extension. A NHTSA spokesperson told Businesss Insider that Tesla was granted the extension and that Tesla must submit the requested data by Friday.