What was found
ATL - DURING CONTRACT MAINTENANCE AT DALA FOR HEAVY C-CHECK, THE RT AND LT SIDES OF THE KEEL BEAM JUST AFT OF STA 873 WERE FOUND CRACKED. THE CRACK IN THE LT BEAM RESULTED IN THE REMOVAL OF A 0.750 INCH LONG BY 0.380 INCH WIDE BY 0.195 INCH DEEP SECTION OF THE CHORD BELOW THE CRACKED FLANGE. THE CRACKS WERE CONFINED TO THE UPPER FLANGE OF THE CHORD ONLY AND WERE REPAIRED PER 727 SB 727-53-0208, REF DL ERA 303000-14. REFERENCE OPERATOR CONTROL NR AALA960339. AIRCRAFT TT: 39,376 HRS. AIRCRAFT TC: 21,692. (X)