What was found
FUSELAGE SKIN CRACKED ON FRAME 75 AT THIRD FASTENER BELOW STRINGER 2R, EASI 8071 USED. FREQ=400KHZ, LPF=100, V-GAIN=76.0, H-GAIN=65.0, 50-500KHZ PROBE. PERFORMED PERMANENT REPAIR OF FUSELAGE SKIN CRACK ON FRAME 75 AT THIRD FASTENER IAW ERS-EM-53MR-1308.