[Talisker]

If terrorism, why the turning off of cellphone repeaters and the slamming into a mountain instead of a city?

If not terrorism, say a heart attack, why the turning off of the repeaters and the disengaging of the autopilot to start a slow descent?

This thing doesn’t add up.

[amorphous]

There is another possibility. The secret assassination of someone onboard.

Terror wise, it's a similar MO as the Asia Airlines disappearance and maybe the pilot feared being shot down or forced down if he had turned toward a metropolitan area. Maybe he saw that as a negative for whatever reason.