What was found
LEFT HORIZONTAL STABILIZER FRONT SPAR L/E FAIRING 331B CRACKED AT RIB 4 MKD DOT / [01] REMOVED RIB #4 AT LEFT HORIZONTAL STABILIZER FRONT SPAR L/E FAIRING 331B IAW SRM 51-40-02-0G-0.;[02] VERIFIED STEP #1; FRONT SPAR L/E FAIRING REMOVED.;[03] LOCATED AND DRILLED NEW RIB #4 PO#1728471 AT LEFT HORIZONTAL STABILIZER FRONT SPAR L/E FAIRING 331B IAW SRM 51-40-05-0G-0.;[04] VERIFIED STEP #3; LOCATED AND DRILLED NEW HOLES ON NEW FAIRING.;[05] OK TO TREAT AND PRIME DRILLED HOLES.;[06] TREATED AND PRIMED LOCATED HOLES AT RIB #4 IAW SRM 51-20-01-0G-0.;[07] VERIFIED STEP #6.<BR> OK TO INSTALL NEW FAIRING.;[08] INSTALLED NEW RIB #4 AT LEFT HORIZONTAL STABILIZER FRONT SPAR L/E FAIRING 331B IAW SRM 51-40-02-0G-0.;[09] (FINAL) REMOVED; LOCATED/DRILLED; AND INSTALLED NEW RIB #4 AT LEFT HORIZONTAL STABILIZER FRONT SPAR L/E FAIRING 331B IAW SRM 51-40-02-0G-0 AND SRM 51-40-05-0G-0.;[10] VERIFIED STEP #8. RIB REPLACED.;[11] FINAL INSPECTION; RIB REPLACED.