What was found
LEFT HORIZONTAL STABILIZER FRONT SPAR L/E FAIRING 331B CRACKED AT RIB 1 MKD DOT / [01] REMOVED CRACKED RIB #1 AT LEFT HORIZONTAL STABILIZER FRONT SPAR L/E FAIRING 331B IAW SRM 51-40-02-0G-0.;[02] LOCATED AND DRILLED NEW RIB #1 PO#1758677 AT LEFT HORIZONTAL STABILIZER FRONT SPAR L/E FAIRING 331B IAW SRM 51-40-05-0G-0.;[03] VERIFIED STEPS #1 AND #2.;[04] OK TO TREAT AND PRIME DRILLED HOLES.;[05] TREATED AND PRIMED DRILLED HOLES IAW SRM 51-20-01-0G-0.;[06] OK TO INSTALL NEW RIB.;[07] INSTALLED NEW RIB #1 AT LEFT HORIZONTAL STABILIZER FRONT SPAR L/E FAIRING 331B IAW SRM 51-40-02-0G-0.;[08] (FINAL) REMOVED; LOCATED/DRILLED; AND INSTALLED NEW RIB #1 AT LEFT HORIZONTAL STABILIZER FRONT SPAR L/E FAIRING 331B IAW SRM 51-40-02-0G-0 AND SRM 51-40-05-0G-0.;[09] VERIFIED STEP #7; NEW RIB #1 INSTALLED.;[10] FINAL INSPECTION; #1 RIB REPLACED.