What was found
LEFT PYLON APRON, FRAME BS 1076 UPPER LONGERON REPAIR CRACKED AT UPPER COWLING HINGE FITTING CUTOUT. INSTALLED FABED NEW DOUBLER FROM 2024-T3- .071 QQ-A- 250/S. 2024-T3 IS A PERMITTED SUBSTITUTION FOR 2024-T42 IAW SRM 51-30-08, FIG 1, TABLE A IAW SRM 54-50-02. REPAIR STEP 6F FIG 203, PG 209-210. PERFORMED FLOURESCENT PENETRANT OF DOUBLER IAW NON DESTRUCTIVE TESTING STANDARDS MANUAL 08-00-03. NO DEFECTS NOTED REINSTALLED AFT UPPER COWL HINGE FITTING IAW SRM 51-41-05, FIG 2 REINSTALLED NR 1 ENGINE UPPER COWLING IAW AMM 71-12-01-400-801.