What was found
CRACK INDICATION FOUND IN OPEN FASTENER HOLE, AFT POSITION AT STUB BEAM STRAPS AREA AT BS 639, RBL 45.57. PERFORMED CLEANING & OBTAINED OK TO APPLY SECOND SEALANT CLASS B PRE COAT ON FASTENERS (6 E/A) COMMON CENTER TANK LOCATED BS 639, RBL 45.57 IAW AMM 28-11-00-300-803, STEP 3.E.(11). REPLACED THE STRAP IAW SRM 51-10-02, ITEM 9, DWG 111A6504, SHEET 7, REV A, & DWG 144A1715, SHEET 9, REV A.