That's serious damage. I'm a pilot but not an engineer, I would not fly an aircraft with that kind of damage without A&P consult, and there's a decent chance on

That's serious damage. I'm a pilot but not an engineer, I would not fly an aircraft with that kind of damage without A&P consult, and there's a decent chance only ferry flight would be legal if it were flight worthy at all. The centrifugal force stress at the hub (root) of a blade is thousands of times the weight of the blade. Easily there's tens to hundreds of tons of force "trying" to pull the blade apart and this not so little nick, makes that much more likely to succeed.