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In page Tupolev Tu-144:
"Aleksey Tupolev, Tu-144 chief designer, and two USSR vice-ministers (of aviation industry and of civil aviation) had to be personally present at Domodedovo airport before each scheduled Tu-144 departure to review the condition of the aircraft and make a joint decision on whether it could be released into flight.[4] Subsequently, flight cancellations became less common, as several Tu-144s were docked at Moscow's Domodedovo International Airport.[citation needed]
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