Here’s what happened...
Hijacked, all electronic comms shut down and the flight was taken below radar.
Plane was taken to somewhere and landed. All passengers have been murdered and the plane is being relabeled with new paint and identity.
Said plane will be loaded with explosives and flown to the US or EU for an Al Qaeda attack.
Just like in the movies.
I’m still going with Muzzie co-pilot kills pilot, angles plane down and nose dives it at 600+ MPH into sea. Whatever held together went to the bottom. Whatever didn’t probably was water logged and went to the bottom.
Why did it disappear from radar at 35’ feet? Can terrorist pilots (assuming they got into cockpit) disable transponders and make them disappear from radar? When terrorists stormed cockpit there was no mayday?
I think it is more likely it exploded and/or crashed than what you described. Maybe debris is so small they just haven’t spotted it? All of this is odd. Anything including your scenario is certainly possible.