On 9 May 2015, an A400M crashed in Seville on its first test flight. Germany, Malaysia, Turkey and UK suspended flights during the investigation. Initial focus was on whether the crash was caused by new fuel supply management software for trimming the fuel tanks to enable certain manoeuvres; Airbus issued an update instructing operators to inspect all Engine Control Units (ECUs). A key scenario examined by investigators is that the torque calibration parameter data was accidentally wiped on three engines during software installation, preventing FADEC operations. On 3 June 2015, Airbus announced that investigators had confirmed "that engines one, two and three experienced power frozen after lift-off and did not respond to the crew's attempts to control the power setting in the normal way."