USSR-L5415, factory number 6350101, was the first aircraft of the first Tu-104 production series built at Kharkiv in 1956. It entered the Vnukovo jet-aircraft unit and operated an early scheduled Tu-104 service before becoming a training airframe at the Kyiv Institute of Civil Aviation Engineers. The O.K. Antonov State Aviation Museum preserves it as the only surviving Tu-104 from the first series.