What was found
RT HORIZONTAL STABILIZER RIB 4 (STAB STA120.30) HAS CRACK AT STIFFENER #3 LOWER RADIUS. / [01] VERIFIED APPLICABILITY OF REPAIR MANUAL SRM 55-10-09-2R-5. <BR>REMOVED DAMAGED AT RT HORIZONTAL STABILIZER RIB 4 (STAB STA120.30) STIFFENER #3 LOWER RADIUS. IAW B737 SRM 55-10-09-2R-5.] FABRICATED REPAIR PARTS FOR HORIZONTAL STAB RIB 4 AT STIFFENER #3. IAW B737 SRM 55-10-09-2R-5 MATERIAL USED ..<BR>ITEM 1 T-SECTION 7075-T76511 EXTRUSION AMS-QQ-A-200/15 0.063' LOT # 1476286-1.<BR>ITEM 2 ANGLE BAC1490-2793 7075-T6 0.063' LOT# 1474027-1.<BR>ITEM 3 FILLER BAC1490-2793 7075-T6 0.063' LOT# 1474027-1.<BR>ITEM 4 (2 EA) SHIM 7075-T6 0.016 LOT# 1351319-2.;[10] APPLIED CHEMICAL CONVERSION COATING TO THE REPAIR PARTS AND BARE SURFACES AND EDGES OF THE RIB 4 AT STIFFENER #3 IAW 51-20-01. OK TO PRIME.;[11] VERIFIED CORRECTIVE ACTIONS 9; 10. OK TO PRIME REPAIR PARTS.;[12] APPLIED CHEMICAL CONVERSION COATING TO THE REPAIR PARTS AND BARE SURFACES AND EDGES OF THE RIB 4 AT STIFFENER #3 IAW B737 SRM 51-20-01. OK TO PRIME.;[13] APPLIED BMS 10-11; TYPE 1 PRIMER TO THE REPAIR PARTS AND BARE SURFACES AND EDGES OF THE RIB 4 AT STIFFENER #3 IAW B737 SRM 55-10-09-2R-5 AND SOPM 20-41-02. OK TO INSTALL;[14] VERIFIED CORRECTIVE ACTION ITEMS 12 (CORRECTED SRM REF) & 13.<BR>OK TO INSTALL REPAIR PARTS GIVEN.;[15] INSTALLED REPAIR PARTS AT HORIZONTAL STABILIZER RIB 4 STIFFENER#3 IAW B737 SRM 55-10-09-2R-5 AND SRM 51-40-02. APPLIED A FILLET SEAL TO THE REPAIR PARTS WITH BMS 5-95 SEALANT IAW B737 SRM 51-20-05.