Beschreibung : Baykonur. The mission failure meant that the orbiting Salyut 6 crew lacked a reliable return vehicle as their Soyuz had the same suspect engine as Soyuz 33.
An investigation lasted a month and found that the part that failed had been tested 8,000 times previously without failing, and the Soyuz engine had fired some 2,000 times since 1967, also without a single failure. But the engine was modified for the next flight, and a vacant Soyuz with the newly modified engine, Soyuz 34, was sent to the orbiting Salyut for the crew there to return with.

ba 337 - picture enhanced ?

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SALYUT 6 EXPE 7 · SOYUZ 33 INTERCOSMOS · RUKAVISHNIKOV, IVANOV · FAILURE