[snom380]

For normal operations, I think it's possible to make it _mostly_ autonomous today (TTS and voice recognition for ATC, and some heuristic metar/weather radar analysis might work). I don't think we have the technology today to make such a system safe enough to not have a human ready as a backup. And for an accident scenario, I think it's completely impossible today since we would need to integrate audio, video and smell sensors and AI software to rival humans in situational awareness. This would mean exceptionally complex software.

The way we have solved reliability in autopilots and FBW systems today is to make them as simple as possible and to give them sensible fallback modes (like the Airbus FBW removing stall protection when missing certain inputs), and even then we have had real life accidents because of programming errors or design errors. So if you think pilot automation is mainly a question of politics as you said earlier, I think you are being overly optimistic (which, of couse, is not uncommon in the software industry).

I think a better approach to removing pilots is to see the strengths in both computers and humans and design systems where the advantages of both are maximized.

If you are interested in reading more on software safety, http://sunnyday.mit.edu/ is a good starting point.