The jet was a medical jet registered in mexico.
Supposedly carrying a child patient, a relative, and 4 crew members.
What a great way to hide someone or something on board. No one questions a medical flight. No customs, no landing delays. Possible patient has a mask on and covered on a gurney. No way to id….
Other than that conspiracy, the jet just took off with a full fuel load. The black smoke shown in the videos is indicative of smoke from burning jet fuel. The medical jet would also be carrying medical oxygen along with the required air flight oxygen for emergencies. This added oxygen would make any explosion much more exothermic. Thus the violent explosion and giant fireball. Some of the videos show that the jet was glowing as it dived to the earth. Possible pre-dive explosion render pilots unconscious. A few videos sound like the jet engines were at a high power when it strikes the earth. Which might indicate loss of consciousness by both pilots and jet was still under take-off throttle setting. 40 seconds total flight time.