3 Proton-M rockets returned to factory over quality control issues – Satellite News Digest

Three Proton-M heavy-lift launch vehicles will be returned from Baikonur to the Khrunichev rocket manufacturer in Moscow so that low-quality parts can be replaced, a source in the space and rocket industry has told Sputnik.

http://www.sat-nd.com/archive/?id=2020041301

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