What was found
DOT 45-020; LEFT HAND HORIZONTAL STABILIZER LEADING EDGE PANEL; SECOND STIFFENER RIB FROM INBOARD SIDE IS CRACKED AT FASTENER HOLE. LEADING EDGE STATION 86.66. ; / [01] REMOVED LH LE RIB ASSY AT LE STA 66.66 IAW SRM 51-40-02-0G-0; [02] LOCATED AND DRILLED NEW LE RIB ASSY. P/N 186A1302-1 ATAG EM1860 IAW SRM 51-40-05-G-0; DWG 186A1001 REV A; [03] VERIFIED CARD STEP 2.<BR>OK TO INSTALL RIB ASSY; [04] INSLTALLED NEW RIB ASSY. IAW SRM 51-40-02-G-0; DWG 186A1001 REV A; [05] CRACKED LE RIB IS LOCATED AT LE STA 66.66. REMOVED AND REPLACED LH STAB LE RIB ASSY. AT LE STA 66.66 IAW SRM 51-40-02-G-0; DWG 186A1001 REV A. RESTORED CIC IAW AMM 51-21-91; [06] VERIFIED STEPS 4 AND 5 C/W; [07] AUDIT C/W