Egyptian investigators will decide later on Tuesday whether to send the memory units of the crashed EgyptAir flight recorders abroad to be repaired or if they will be mended domestically, Civil Aviation Minister Sherif Ismail said.
"In case the memory units are sent overseas, this will be under Egyptian supervision and for a 24-hour period," Fathy told reporters.
Fathy added during the signing of an airport security deal with a British firm that Egypt has yet to decide on the country to which the units will be dispatched.
The minister promised that the results of the probe into the crash would be announced with "complete transparency."
The Airbus A320 passenger jet crashed into the Mediterranean on 19 May while en route from Paris to Cairo, killing all 66 people on board.
The twin voice recorders were found last week, in a major step that is expected to greatly help investigators form a clear picture of what caused the crash of flight MS804.
Both France and the United states have sent investigators to Cairo to take part in the probe. The plane was manufactured in France, who also had the highest number of foreign victims aboard. The Airbus A320 engine was made in the United States.