 When the spacecraft was installed atop the Dnepr , launch was scheduled to occur on 25 February , at 13 : 57 UTC . Prior to this , a practice countdown was scheduled for 19 February . Several hours before the practice was scheduled to begin ISC Kosmotras announced that the launch had been delayed , and as a result the practice did not take place . The delay was caused by a concern that the second stage manoeuvring engines did not have a sufficient quantity of reserve fuel . 
