The aircraft, painted in the Boeing house livery, took off from Renton at 10:07 local time in Seattle. The jet will spend the next few hours in the air undergoing various testing and giving Boeing’s engineers and employees a first look at the plane’s actual performance in the air.

The jet is flying under the callsign “BOE101.”  This is a pretty standard callsign for Boeing’s test flying. At the time of writing, it was scheduled to arrive at 12:35 in Grant County International Airport (MWH). Better known as Moses Lake, this facility is also where Boeing has stored MAX aircraft during the grounding.

Release and photo Boeing