With the completion of Phase 2 Phase 3 testing is underway with the launch of Raven on CRS-10. The new Phase 3 module was delivered to the station on December 8, 2018 on SpaceX CRS-16 and installed on the ELC 1 on December 19, 2018. Zero boil off storage of cryogens (methane) was demonstrated for 4 months, but following a cryocooler failure the methane was vented in April 2019.