|Zenit 3 SL|
|Launch vehicle||Zenit 3-SL/Block DM-SL|
|Launch site||International Waters, Pacific Ocean|
|Description||Second stage partial failure|
|Cause||Ground software logic error|
|Payload||ICO F1 (Telephone satellite, ICO)|
|Desired orbit||Geostationary transfer orbit|
As a result of launching with this valve in the incorrect position, a sequence of events followed, involving excessive loss of helium. Ultimately, the rocket did not reach orbital velocity, leading to a premature shutdown of second-stage engine and termination of the flight at approximately 8 minutes into the mission.
The Board received independent reports and presentations from the Sea Launch partners, as well as from representatives from a joint Russian and Ukrainian commission.