What was found
RT HORIZ. STAB RIB ASSY. 4 (STAB STA 120.30) 4TH VERT STIFFENER IS CRACKED. ; / [01] REMOVED CRACK DAMAGE L=0.30INCHES ON THE 4TH VERTICAL STIFFENER AT 0.95INCHES FROM THE LOWER CHORD OF THE RIB IAW SRM 55-10-09-2R-4 STEP 4.B.(1).; [14] VERIFIED CORRECTIVE ACTION 13; OK TO INSTALL; [15] INSTALLED RIGHT HAND HORIZONTAL STABILIZER INSPAR RIB ASSY AT STAB STA 120.30 IAW SRM 51-40-02-0G-0 AND BAC DRAWINGS #182A3001; 182A1500 AND 002A0001.; [16] VERIFIED CORRECTIVE ACTION 15; [17] PAINTED RT STAB UPPER AND LWR SKIN SURFACES FOR STAN RIB REPAIR AT STAB STA 120.30 IAW AMM 51-21-99-300-802.; [18] VERIFIED CORRECTIVE ACTION 17.