No need to be concerned if they're EI Regional. Ultimately, issues like the not so long ago nose wheel collapse will happen with old props in seriously windy conditions and a hard landing takes place - that's the way of the world - it could have been any other airline with the A/C type in a similar situation. Ultimately, maintenance is a top operation from what I've been told for RE. They're perfectly safe to fly on. If they weren't, they'd be grounded.