Spooky stuff isn't it ? I've only seen A&Ps do visual checks of props and file till smooth any nicks deeper than about 3/8 inch, which have then been pronounced airworthy. That has been OK so far for about 1100 hours on one such nicked SkyHawk prop but I sure don't like looking at and flying behind that smoothed down nick all that much.
Don't they sometimes x-ray or phosphorescing dye-check fixed wing props like is done for chopper blades ? Maybe too picky I guess.
BTW:
Richard, I have an "a" you can use, unless you are originally from, or are addressing the deep south readers !