The instrument is expected to provide investigators with technical details about the flight.
The other recorder, holding voice recordings from the flight, was recovered from the seabed on May 22.
All 113 passengers and crew on board died when the Armavia Airlines Airbus A320 crashed on May 3 during its approach to Russia's Black Sea resort of Sochi on a flight from Yerevan.
There has so far been no official word on the possible cause of the crash.
(AFP, ITAR-TASS)