I have really looked into this. If you look on Flightaware.com, you can see from their tracking data that the plane kept ascending over 1,000 feet a minute. And, when it went off of their tracker, it was still ascending. In addition, the pilot worked for the airline since 1981, and has almost 19,000 hours offlight experience. No distress signal was sent, and no black box signal was received. No wreckage has been found, and neither have there been any survivors.
The following may sound a little crazy, but I think that this incident involves something more strange, more abstract.
I propose the following theories:
1. Aliens abduct the plane, passengers and all. The plane was ascending rapidly because it saw an UFO and the pilot was startled, and when the pilot wanted to radio in to the air traffic controllers; they were abducted.
2. The plane entered The Dragon's Triangle (a well-known area, similar to The Bermuda Triangle, and has a lot of different paranormal occurrences.), and something happened. For example, it entered some sort of magnetic anomaly, portal, alternate dimension, UFO abducted it, etc.
3. Terrorists are on the plane and they blow it up before any distress call can be made.
4. Plane disintegrates.