What was found
LEFT WING INBOARD FLAP, AFT FLAP S/N 000204 UPPER SKIN HAS 4 EACH AREAS OF CHAFING CAUSED BY LONG BOLTS ON MID-FLAP. AREAS ARE WBL 248.0, 297.0, 339.0 AND 425.0. CHAFE IS .500 INCH IN DIAMETER. PERMANENT REPAIR ACCOMPLISHED AS PER B747-200 SRM 51-40-09 FIG 5, SHEETS 4 & 10, ALUMINUM HONEYCOMB REPAIRS, 250 DEGREES F CURE PER SRM 51-40-20. LONG BOLTS ON MID-FLAP WERE REMOVED AND REPLACED AS PER B747-200 SRM 51-30-02. ALSO REFERENCE ATLAS AIR EO4757A455. (S)