, Sukhoi has had trouble selling the Superjet and renewing leasing contracts outside of Russia because of reliability and service network issues . Unease with the SSJ 's low reliability also spread to Russian operators . Yamal Airlines , the second-largest Russian SSJ operator , announced the cancellation of its order for 10 further SSJs , citing high servicing costs . Aeroflot 's CEO reflected that the airline might never have ordered any SSJs had it not been under state control . Of 30-40 SSJs owned by Aeroflot , only 10 are reportedly usable at a time due to maintenance problems . Aeroflot cancelled approximately 50 Superjet flights in the week following the Flight 1492 accident . '' Kommersant '' cited industry sources as saying the Superjet 100 had lower dispatch reliability than Airbus and Boeing aircraft in the airline 's fleet historically and attributed a rise in cancellations to " increased safety measures " at Aeroflot while the accident is investigated . On 4 June , the Russian Federal Air Transport Agency ( Rosaviatsiya ) ordered carriers to perform one-time inspections of the SSJ , including a general check of the aircraft 's condition and verification of aircraft and engine logs , by 25 June
Flight 1492
Aeroflot Flight 1492
Sukhoi Superjet 100