EgyptAir muslim pilot suicide crashes have happened previously.
Revenge drove pilot to crash plane, killing 217
www.theguardian.com/world/2002/mar/16/duncancampbell
Mar 15, 2002 ... The co-pilot of EgyptAir Flight 990, which crashed off New England in 1999, killing 217 people, deliberately crashed the plane as an act of ...
RE: “Or suicide by pilot.
Possibility. Remember Germanwings co-pilot Andreas Lubitz and his suicide mission.”
Eyewitness on Fox says fire was seen
In the case of the EgyptAir suicide pilot and GermanWings, the planes didn’t just disappear from radar. They showed a dive in both cases. This plane today just disappeared from radar at altitude with no dive indicated. This suggests an aircraft breakup at altitude.