What was found
CRACKS FOUND AT HOLES OF LOWER I/B FLANGE OF LEFT HORIZONTAL STAB RIB #4 AT FASTENER HOLES LOCATED 8';11';15'; 34.5' AND LOWER O/B FLANGE- 34'; FROM FRONT SPAR. CRACKS FOUND AT HOLES OF LOWER I/B FLANGE OF LEFT HORIZONTAL STAB RIB #4 AT FASTENER HOLES LOCATED 8'11'15' 34.5' AND LOWER O/B FLANGE- 34' FROM FRONT SPAR.<[01] REMOVED DAMAGED #4 RIB AT L/H HORIZONTAL STAB AND ACCOMPLISHED DRILLING AND ASSEMBLY OF NEW #4 RIB. INSTALLATION OF NEW #4 RIB ASSEMBLY WILL BE ACCOMPLISHED ON CUSTOMER TASK [TTG8Q00VGLVC].<BR><BR>REFERENCES: BOEING DWG # 182A5304; B 737-700 SRM 51-40-02-0G-0;SRM 55-10-09-1A-1 ALLOWABLE DAMAGE;[02] VERIFIED STEP 1.