MOSCOW — The flight data recorder of the Russian military passenger plane that crashed into the Black Sea near the resort town of Sochi, killing all 92 passengers and crew members on board, has been recovered, the Russian Defense Ministry said on Tuesday.

The flight recorder was found about a mile from shore and was quickly transferred to Moscow, where investigators began working on decoding it, said Maxim Sokolov, the transportation minister.

The Tupolev 154, carrying members of the Alexandrov Ensemble, a famed army choir and orchestra, crashed on Sunday shortly after a refueling stop in Sochi. Twelve bodies have been recovered, along with 156 body parts, according to the Defense Ministry statement, and all were sent to Moscow for identification. Relatives have identified just one victim, it said. Parts of the fuselage, engine and landing gear have also been found.

The Russian authorities have not ruled out terrorism as the cause of the crash, but they have said it is unlikely. The data from the flight recorder could be crucial in determining why the plane went down.