As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUSELAGE FS409+128 VERTICAL POST AT BL0 HAS AN INDICATION .2" LONG BY 80% FSH IN THE AFT RADIUS OF BOTH THE RH & LH SIDES @WL69. FAILED NDT INSPECTION. (C-CHECK RO 4/1/2021) FUSELAGE FS409+128 VERTICAL POST AT BL0 WAS REMOVED AND A NEW POST INSTALLED IAW REO 601R-53-41-889 REV D. WITH NO WEIGHT CHANGE. TASK CARD 51-900-1003-SKY AND M-337 ATTATCHED