Update on Eris TestFlight1 Investigation

Gilmour Space published the findings of its investigation into the failed Eris TestFlight1 mission of 30 July 2025. One of the four first-stage hybrid engines lost thrust approximately nine seconds after ignition, followed by a similar problem in another engine around 17 seconds. Investigators identified two independent failure modes involving electrical and thermal faults in the oxidiser pump subsystem, including electric motors and associated inverters. A final report was submitted to the Australian Space Agency and Office of the Space Regulator.