What was found
LEFT UPPER FUSELAGE SKIN HAS 2 CRACKS, CRACK 1 IS AT FRAME 75 & ABOVE STRINGER 2L, CRACK IS 1" LONG. CRACK 2 IS AT FRAME 75 OFF OF THE FIRST FASTENER BELOW STRINGER 2L, CRACK IS APPROX 1/4" LONG, EASI 8071 USED, 100-500 KHZ PROBE, FREQ= 400KHZ, V-GAIN= 77.0, H-GAIN=65.0, LPF=-100. SATISFACTORY ACCOMPLISHED THE REPAIR OF 2 CRACKS ON LT UPPER FUSELAGE SKIN AT FRAME 75 ABOVE STRINGER 2L, & OFF OF THE FIRST FASTENER BELOW STRINGER 2L IAW ERS-EM-53MR-1828. SEE WIP & TASK ENTRIES FOR DETAILS.