What was found
LT WING (#1 TANK) AFT VENT STRINGER IS CRACKED AT STRINGER U-11 JUST I/B OF RIB #6 WSTA 228.25 AND EXTENDING O/B BEYOND RIB #6. JACKED AIRCRAFT IAW AMM 07-11-01-580-815. SHORING REQUIRES AN OK TO CONTACT AT FUSELAGE STATIONS 360; 662; & 1016. LH WING STATIONS 353 & 564.5; RH WING STATION 564.5 IAW EA 22-151-03136;[03] OK TO CONTACT AT FUSELAGE STATIONS 360; 662; & 1016. LH WING STATIONS 353 & 564.5; RH WING STATION 564.5 IAW EA 22-151-03136;[04] LOADED SHORING TO 1000LBS AT ALL CONTACT POINTS FUSELAGE STATIONS 360; 662; & 1016. LH WING STATIONS 353 & 564.5; RH WING STATION 564.5;[05] VERIFIED STEP 4