What was found
DORSAL FIN PANEL 321A FWD FITTING CRACK. DORSAL FIN PANEL 321A FWD RIB CRACK / [01] REMOVED DORSAL FIN 321A FWD RIB AS PER REF B737-700 SRM 51-40-02-0G-0;[02] LOCATED AND DRILLED NEW RIB P/N 174A1108 AS PER REF B 737-700 SRM 51-40-05-0G-0;[03] VERIFIED STEPS 1 AND 2. OK TO INSTALL NEW RIB.;[04] INSTALLED NEW RIB AT DORSAL FIN PANEL 321A AS PER REF B737-700 SRM 51-40-02-0G-0 AND DWG #174A1008;[05] VERIFIED STEP 4.