launched fromRussia

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 fromPad 200/39Baikonur

aboardProton M / Briz-M935-45intoGSO

Payload

Ekspress-AM4R

Communications

last updatedApr 26, 2026