What was found
EA 5310-07557 REV B OP 002 (AD 2019-11-02) LH UNDERWING LONGERON CENTER TANK FRONT SPAR CHORD 1EA HOLE FOUND CRACK AT 5, 7 & 10 O`CLOCK WITH 3/16" IN DEPTH (DETAIL REF NDT INSP FINDING RECORD) TRANSFER REF. NON-ROUTINE HX NRC WO.4213299 AND EA 5310-07557 REV B OP 002 LH UNDERWING LONGERON CENTER TANK L/P NO. 3547860, AND L/P NO.3547739 CREATED. FRONT SPAR LOWER CHORD REPAIRED AS PER EC/RA NO.5310-08495 REV ORIG PART 1 INTERIM REPAIR , REPEAT INSPECTIONS REQUIREMENT REFER EC/RA NO.5310-08495 REV ORIG PART 1 STEP 2 AND STEP 3, RII INSPECT IS OKAY.