"If the deliveries of satellite-borne equipment are delayed for more than a week, the timely assembly of the spacecrafts, the conduct of in-plant tests and [the spacecrafts'] timely delivery to the cosmodrome will become problematic, which threatens to postpone the launch until 2019. Such a scenario cannot be ruled out," the source said.
18 May 2018, 08:48 GMT
In June, the Russian Defense Ministry announced a successful launch of the Soyuz-2.1b carrier rocket from the Plesetsk space center on Sunday to orbit a Glonass-M satellite.
READ MORE: Soyuz Rocket With Meteor Satellite Blasts Off From Vostochny Cosmodrome (VIDEO)
Earlier, Reshetnev Information Satellite Systems satellite producer reported that the signal interface control document for GLONASS would be updated in 2018.
