What was found
A CRACK WAS FOUND EMANATING FROM EXISTING STOP DRILL IN THE LT UPPER WING SKIN ALONG THE AFT EDGE AT APPROX IWS T395. CRACK HAS PREVIOUSLY BEEN STOP DRILLED 5 TIMES. CURRENTLY, THE CRACK HAS EXTENDED PAST THE LAST STOP DRILLED HOLE AND MEASURES A TOTAL LENGTH OF 2.096. DURING THE INSTALLATION, THE ATTACHMENT HOLES THROUGH THE AFT SPAR DID NOT HAVE EDDY CURRENT INSPECTION PRIOR TO COLD WORKING THE HOLE. HOLES WERE REAMED TO THE NEXT STD SIZE, FASTENERS UPGRADED TO HLT314-10 AND REPAIR DOUBLERS INSTALLED. REPAIRED PER ERA 362490-14