“An investigation by aviation experts using data from the aircraft’s “black boxes” has yet to give its conclusions. “
YET, the Russians have declared that it was NOT a technical problem, or aircraft failure, and that the pilot absolutely did NOT declare a problem and ask to descend for an emergency landing.
This goes in the face of the Egyptian statement (ATC) that the pilot did say they were having technical problems and needed to land.
The Russians are DENYING plane failure to much for me to believe that it was anything else.
I could just as easily believe the Egyptians not wanting an excuse for Russian involvement in the Sinai as well.