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| launch site = Le Grand Elementary School, Le Grand, CA
| launch site = Le Grand Elementary School, Le Grand, CA
| launch coordinates = 37.226, -120.251
| launch coordinates = 37.226, -120.251
| flight duration =
| flight duration = 3h:52m
| flight length =
| flight length =
| flight profile = Ballast and vent control
| flight profile = Ballast and vent control
| landing time =
| landing time =June 1, 2019, 14:27 ODT
| landing site=
| landing site= 13 km SW of Mendota, Fresno County, CA
| landing coordinates =
| landing coordinates = 36.692, -120.518
| last = 86
| last = 86
| next = 90
| next = 90
'''June 1, 2019, 1355 PDT:''' To play it safe, yet 96 more seconds were sent, as the balloon was nearing the danger zone. Following this, a slight descent was observed after a peak altitude of 22.100 km, and equilibration was declared.
'''June 1, 2019, 1355 PDT:''' To play it safe, yet 96 more seconds were sent, as the balloon was nearing the danger zone. Following this, a slight descent was observed after a peak altitude of 22.100 km, and equilibration was declared.
'''June 1, 2019, 1409 PDT:''' It was noticed that the GPS coordinates and altitude had frozen at the launch site. The cause for this remains unknown, and hence no detailed trajectory of this flight is available. Simulatenously, the barometer began reporting a negative altitude. This is when the balloon probably popped, after spending only three communication intervals between 22.0 and 22.1 km.
'''June 1, 2019, 1409 PDT:''' It was noticed that the GPS coordinates and altitude had frozen at the launch site. The cause for this remains unknown, and hence no detailed trajectory of this flight is available. Simultaneously, the barometer began reporting a negative altitude. This is when the balloon probably popped, after spending only three communication intervals between 22.0 and 22.1 km.
'''June 1, 2019, 1427 PDT:''' Iridium triangulation began reporting consistent coordinates. It is believed that this was payload impact.
'''June 1, 2019, 1427 PDT:''' Iridium triangulation began reporting consistent coordinates. It is believed that this was payload impact.