My kid hit Mach 0.85 in airplane!

This 747 may have gone supersonic in a fluke emergency dive. upload_2022-7-8_16-9-10.png
".....a Boeing 747-100 going supersonic? Reports from 1991 suggest that this aircraft reached a speed of Mach 1.25 while rapidly descending due to a malfunction. The 747 had mysteriously banked 90 degrees to the right and was descending at an angle of 30-35 degrees for 10,000 feet. This 1.25 mach number was never confirmed (.98 was also reported) this could be the fastest a commercial Queen of the Skies has ever flown."

That would have been a wild ride. Boeing tested the frames to Mach 0.99 while in development.