Yes, indeed.
I remember a flight of ours being cancelled many years ago because of a dent in the nose of the plane. That can, potentially, be serious stuff at 500+ mph at altitude.
I've read about and watched programs about the first De Havilland Comet (first pressurized jetliners) air disasters happening way back when. Metal fatigue due to something as "simple" as the square shaped windows, that were later modified. Can't be too careful about that stuff.
Don't see too many "jetliners" flying around with dings on 'em...