launched from Russia

Ekspress-AM4R

Failure
MAY 15201421:42:00 UTC

A third stage vernier thruster failed at T542 seconds after the failure of the turbopump structural support caused damage to the oxidiser inlet line.

launched from Pad 200/39 Baikonur

aboard Proton M / Briz-M 935-45 into GSO

Payload

Ekspress-AM4R

Communications

last updated Apr 26, 2026