Here’s the scary part; the SA-11, like most modern SAM systems can operate in a virtually automatic mode. It automatically acquires, prioritizes and fires against targets within range. Operator interface is only required to approve/disapprove the launch. Put a semi-trained conscript (or pro-Russian rebel) in the operator’s seat and the potential for fratricide is high.
The social media post from that rebel commander is telling...they weren’t really sure what they were firing at; thought it was a Ukrainian transport, hit a jetliner instead.
One would think if it was in automatic fire mode, they should have shot another commercial jetliner down yesterday. Or the day before. There were plenty of commercial jets flying over that area every day.