What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
On June 16 2020 at 1415L the operator was conducting an initial 135.293 check with a small UAS, matternet M2. These checks are operated under part 107. In preparation for the flight, and after loading the flight plan and payload box in accordance with upsff SOP, the M2 initiated a takeoff maneuver that was not commanded by the rpic candidate or the check airman. The operator stopped all operations and contacted the manufacturer for support, matternet. Investigation into the event found that an engineer on the matternet staff, conducting flight testing, had inadvertently or mistakenly, initiated the takeoff on the M2-0037 aircraft through their system.
As the FAA filed it
ON JUNE 16 2020 AT 1415L THE OPERATOR WAS CONDUCTING AN INITIAL 135.293 CHECK WITH A SMALL UAS, MATTERNET M2. THESE CHECKS ARE OPERATED UNDER PART 107. IN PREPARATION FOR THE FLIGHT, AND AFTER LOADING THE FLIGHT PLAN AND PAYLOAD BOX IN ACCORDANCE WITH UPSFF SOP, THE M2 INITIATED A TAKEOFF MANEUVER THAT WAS NOT COMMANDED BY THE RPIC CANDIDATE OR THE CHECK AIRMAN. THE OPERATOR STOPPED ALL OPERATIONS AND CONTACTED THE MANUFACTURER FOR SUPPORT, MATTERNET. INVESTIGATION INTO THE EVENT FOUND THAT AN ENGINEER ON THE MATTERNET STAFF, CONDUCTING FLIGHT TESTING, HAD INADVERTENTLY OR MISTAKENLY, INITIATED THE TAKEOFF ON THE M2-0037 AIRCRAFT THROUGH THEIR SYSTEM.