Russian news agency Interfax got ahold of a letter from the head of Rosaviatsiya to the Minister of Transportation, in which Rosaviatsiya officially recommends banning the importation of commercial aircraft older than 15 years.
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There's also a second bombshell in the letter. It proposes to require domestic airlines to register all their aircraft in Russia. (The requirement would apply immediately to all newly acquired aircraft. Existing aircraft are grandfathered till 2018.)