Egyptian authorities say they are capable of retrieving information from the cockpit voice recorder (CVR) of the doomed EgyptAir flight MS804 as its memory chips are not damaged.

“None of the memory chips of the electronic board was damaged. After the replacement of the... board components, test results were satisfactory and it enabled the reading of the recorders,” a statement from an investigative committee probing the plane disaster said on Saturday.

The investigators hope that they could finally crack the mystery of the passenger jet by reading and analyzing the flight data recorder and listening to contents of its CVR, the statement further said, adding that the committee members were planning to return to the capital, Cairo, to conduct their investigation at the central department for aircraft accidents at Egypt's Ministry of Civil Aviation.

The Airbus A320 mysteriously crashed in the Mediterranean Sea in May, killing all its passengers and crew.

The plane was en route from Paris to Cairo, when suddenly disappeared from radar with 56 passengers. Ten crew members also lost their lives in the tragedy.

It was flying at 37,000 feet (11,300 meters) when it lost contact with radar over the eastern Mediterranean, 10 miles inside the Egyptian airspace, at 02:45 Cairo time (00:45 GMT).

Greek authorities said at the time that captain of a merchant ship had reported a “flame in the sky” some 130 nautical miles south of the Karpathos island.

Reports of a possible system failure came hours after the wreckage of the plane, including “personal belongings of the passengers and parts of the plane debris,” was found 290 kilometers (180 miles) north of Alexandria.

The flight data recorder now indicates that possible lavatory and avionics smoke was belched out before the jet plunged into the sea.

Last October, an Airbus A321, operated by a Russian airliner and bound for St Petersburg, crashed in the Egyptian Sinai Peninsula’s Red Sea resort of Sharm el-Sheikh, killing all the 224 people on board, who were mostly Russians.