What was found
FOUND DURING C-CHECK, LOWER STIFFENER CRACKED ON ENGINE COWL 453CL. REFER TO CELSUIS TASK CARD 4516, W/O 18783. MAINTENANCE STOP DRILLED CRACK, FABRICATED REPAIR FROM 301 1/4 .032 REF SRM 51-20-20. 51-40-60, FAY SEALED AND INSTALLED REF SRM 51-20-50 AND 51-40-21.