What was found
DURING ROUTINE C-CHECK INSPECTION, A CRACK WAS FOUND PROTRUDING TO A RIVET HOLE FROM STATION 1530, LONGERON 31 RIGHT. REPAIR ACCOMPLISHED VERIFICATION THAT THE CRACK DID NOT PROGRESS PASS RIVET HOLE, FABRICATION AND INSTALLATION OF AN EXTERNAL REPAIR DOUBLER IN ACCORDANCE WITH DER APPROVED SKETCH C59-R01 AND ENGINEERING ORDER 53-DC8-683.