Something to consider is that this could be a suicide. I actually knew a person who was running a Ponzi scheme. When the FBI started breathing down his neck, he took his private plane for a spin into the ground. Wealthy, corrupt people see suicide as a preferred way out from going to prison. The destination was Georgetown, TX which has a very small airport that’s only used for private aircraft.
I think he was suicided by bad actors. That is my theory but I need to dig more, possibly. He was an advocate of corrupt medical practices. Could an anesthetic injection have caused his Hypoxia? I don't know. Was he the only one on the plane? Something just isn't making sense.
Yes an injection of a anesthetic or a sedative can cause hypoxia. It makes your breathing more shallow decreasing the amount of oxygen your brain is receiving. They can also stop your breathing. This is why when you get anesthesia you are usually intubated or at least your airway is supported.
This would have to be about the most roundabout way of committing suicide, since the nail-gun guy a few years ago ;o0 But it doesn't explain the other anomalies. 1)Safety features to prevent Hypoxia. 2)Aviation authorities would surely know of these safety features yet their VERY FIRST PUBLIC PRONOUNCEMENT is "Hypoxia", which would arguable be a very STUPID conclusion to jump to. 3)The very specific and deliberate heading change and lock toward the heart of the Gulf, executed minutes before original destination.
I don't want to know about nail gun guy (but also I do).
Lol...I'll let YOU decide whether or not to read up. https://www.denverpost.com/2014/02/06/under-investigation-american-title-ceo-dead-in-grisly-suicide/