PositiveRate:
Think DHL B75F and TU154 over Swiss airspace a few years back.
Human error is always possible.
MM
Yes, but the issues with some nations pilots being trained to give ATC precedence over TCAS were cleared up after that event, so such a cause-effect chain is unlikely to happen again.
probably a good idea not to talk to the bbc either as they will only do their usual hatchet job and add the story to their "we hate aviation" editorial stance.