What was found
CORROSION ON EXTERNAL SKIN LOCATED ON AREA OF DRAIN MAST FRAME 30-34, STR 42L-43L. REWORKED AREA IAW SRM 51-74-00 ON EXTERNAL FUSELAGE SKIN LOCATED FR30, FR34, STR 42L TO 43L LT SIDE EVALUATED AND FOUND WITHIN LIMITS ASPER SRM 53-21-11, PARA 4E FIG 115 AND DIAGRAM 105, MEASURE AFTER REWORKED AREA ARE:L=2114, W=1.661. MINIMUN REAMING THICKNESS ON REWORK AREA=0.090" INITIAL THICKNESS IN NON-REWORKED AREA IS 0.094" MEASURED IAW NTM 51-10-04 PB4 EQUIPMENT, PN 45MG, SN 130061901 DUE DATE DEC.27.2014 HFEL INSPECTION ON REWORKED AREA ON EXTERNAL SKIN IAW NTM 51-10-08 PB6, NO CRACK INDICATION.