This is one of many planes to disappear over the last few years. The first to gain national attention was Malaysia Airlines Flight 370, which lost contact with air traffic control at 1:19 MYT on the 8th of March, 2014. Both of these aircraft lost contact with air traffic control, and shortly afterwards crashed. Malaysian Airlines Flight 370 was carrying 239, all of which lost their lives.
EgyptAir Flight 804 had 56 passengers, 10 crew members, and all are presumed to have lost their lives. There have been little to no debris found in either crash, leaving investigators in the dark about what truly happened in the final moments of these flights.
Neither of these incidents have been linked to terrorism yet, but this is not ruled out in the case of flight 804. Investigators and search crews have been searching for the black box, also known as the “information box.” This box, contrary to it’s name, is usually orange, about the size of a suitcase, it typically contains flight recorder data, such as altitude, air pressure in the cabin, speed of the aircraft, and voice recordings from the cockpit and the pilots. Without this, there is no definitive to the question that’s been on everybody's mind: What happened to these flights?
Some french families of the victims are voicing their concern about the egyptian government handling the investigation, stating they wish for more involvement from french authorities.
In 2004, a jet carrying mostly French tourists, was under investigation after it crashed. Egyptian investigators “cooperated very badly with the French authorities” at the time, said a representative for the families of the victims.
Until more time has passed, and we find out more about the final moments of these flights, we cannot know for certain what happened to these victims.