What was found
REF. EA1-A55-3550 STEP 16. HORIZONTAL STAB. RIGHT SIDE LEADING EDGE RIB HAS ONE ELONGATED RIVET HOLE ON LOWER FLANGE. (AT STATION 133.15) / RH STAB HORIZONTAL LEADING EDGE RIB AT STA 133.15 REMOVED ON NON-ROUTINE X637200. RECIVED NEW RIB P/N 186A1307; SI# 7550164 A-TAG WN7783 LOCATED AND DRILLED NEW RIB AND INSTALLED NEW RIN IN RH STAB HORIZONTAL LEADING EDGE AT STA 133.15 IAW SRM 51-40-02-0G-0; SRM 51-40-05-0G-0; DWG 186A1001 REV A