The Wall Street Journal reported on Tuesday that Tesla Chief Executive Elon Musk said the company has no plans to disable Autopilot in the wake of the crash. Its stock was little changed at $224.65 a share, a decline of less than 0.1 percent. NHTSA sends such letters as a part of its safety probes.

Other questions include what Autopilot does when cameras and sensors aren’t working properly, how the system was tested, and how it filters out “false positive events and interventions.” It also wants records of how many times the system told drivers to put their hands on the wheel and how often that led to the car automatically reducing vehicle power. The agency is seeking details of all design changes and updates to Autopilot since it went into use last year, and information on whether Tesla plans updates in the next four months. It was first known fatality to involve a Model S operating on the Autopilot system that takes control of steering and braking in certain conditions. Joshua Brown was killed when his vehicle, operating on Autopilot in Florida, drove under a tractor trailer. It requires the Palo Alto-based automaker to file responses in the coming weeks. The agency’s nine-page letter dated July 8 was made public Tuesday. National Highway Traffic Safety Administration (NHTSA), investigating an accident that has increased scrutiny of automated driving technology, also wants to know what Tesla investigators have learned about the crash.

highway safety regulators have demanded that Tesla Motors Inc hand over detailed information about the design, operation and testing of its Autopilot technology following a May 7 fatal crash in which the system was in use.

The Fatal Crown by Ellen Jones