What was found
MAJOR REPAIR, DURING THE MAIN BASE VISIT INSPECTION PERMANENT REPAIR OF DEFERRED LIGHTNING STRIKE DAMAGE AT FRAME 15 AND STRINGER 18 LEFT. CUT OUT DAMAGED SECTION ON STRINGER 18 LEFT. FABRICATED A 40 INCH SPLICE SECTION FROM PART NUMBER PE11001-F4. PREPPED, CLEANED, ALODINED, PRIME AND INSTALLED REPAIR IAW AEA EO EM-53MR-1249 PART D. AIRCRAFT RETURNED TO SERVICE.