Translated with AI from the Russian original.
Leading test pilot, Hero of the Russian Federation, Oleg Mutovin, shared information about an incident that occurred during the testing of the first prototype of the MC-21 aircraft.
During the testing of the first version of the MC-21-300 in the fall of 2021, before taking off from Perm, one of my Pratt & Whitney engines suddenly failed - it started producing metal shavings. I had to stay and wait three days for a new one to be brought in and replaced. It occurred to me then that flying to the center of Russian engine manufacturing on American engines was a mental error.
It should be noted that the first MC-21-300 aircraft were equipped with American-made Pratt & Whitney engines.
The Irkut Corporation made this decision at the time because the American engines were ready for installation and testing earlier than the Russian PD-14 engines. This allowed the aircraft to be certified on schedule.
Earlier,www1.ru reported that anew method of rotary welding for PD-8 and SaM146 engines has been introduced at the UEC-Saturn engine-building enterprise.
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