What was found
(B757-53-3-0478) AFT PIT RH INTERCOSTAL LOWER FLANGE HAS CORROSION AT STA 1280, BETWEEN S26R AND S27R (MARKED). TRANSCRIBED FROM HAECO N/R 9282563 S27R I.A.W B757-200 SRM 51-40-02 RECEIVED NEW INTERCOSTAL P/N 14 S26R-S27R I.A.W B757-200 SRM 51-40-02 AND I.A.W BOEING DWG #146N 6N5425U28 PO: 1047192.1, LOCATED AND DRILLED NEW INTERCOSTAL I.A 5425 REV:- REF HAECO GSO MECH V899229 INSP Q466 .W B757-20 SRM 51-40-05 AND I.A.W BOEING DWG #146N5425 REV:-, IN STALLED NEW INTERCOSTAL AT AFT PIT R/H STA 1280-1300 BETWEEN REMOVED CORROSION AFT CARGO INTERCOSTAL STA 1280 STR 26R-27R ORI GINAL MAT. THICKNESS .032 REMAINING .019, MATERIAL LOSS .013 FOU ND TO BE OUT OF LIMITS I.A.W. B757-200 SRM 53-00-04. REMOVED THE INTERCOSTAL FROM AFT PIT R/H STA 1280-1300 BETWEEN S26R