That looks pretty typical for 206 series leading edge with a few hours. There was a company that had an STC to install a Nickel Leading edge strip on the 206series blades, but had to be installed on zero time blades only. We scrapped a few "bare" blades from erosion before they Tx'd hour wise. I am not sure about the STC extending to the 505.
Last edited by rotarywrench; 4th Feb 2021 at 19:23.
Reason: misspelled "on"