Russia to check space flight engines over faulty parts

Russia on Saturday said it had ordered a full check of engines used on its key Proton rocket after a cargo ship crashed last month due to engine disintegration and an inspection revealed factory violations. A plant making engines for both the Soyuz and Proton rockets had workers "switch technology and documentation," Deputy Prime Minister Dmitry Rogozin said, vowing to punish those responsible.
Earlier reports said engine parts used on the second and third stages of the widely-used Proton rocket had been swapped for cheaper variants.
"A necessary check of engines with possible technical defects will be made," Roscosmos space agency said, adding that the launch schedule will be "coordinated" with the verifications.
Rogozin said launches using the Proton rocket would resume in three and a half months.