What was found
FOUND DURING C-CHECK, LT ENGINE COWL DOOR (P/N 727110-614) CRACKED LOWER RIB. MAINTENANCE CUT OUT DAMAGE, STOP DRILLED CRACKS ON 613 RIB. FABRICATED REPAIR DOUBLERS FROM 301 1/4HD, .032(614 RIB) & 301 1/4HD. 020(613 RIB), INSTALLED REPAIRS IAW SRM 51-40-21.