Today ZA001 took off from Boeing Field at about 12:45 and went to the east side of WA state to its personal racetrack. It was airborne today for about 5.25 hours of flight testing. It seemed to hover around 15,200ft for most of its flight. It got up to mach .84 for the day and that was about it. A pretty uneventful testing day as it seems like they were just doing some stall testing.