What was found
YVR - MAJOR REPAIR - DURING C-20 CHECK A .5 INCH CRACK WAS FOUND 10 INCHES UP ON THE AFT END OF THE FORWARD CARGO DOOR, JUST FORWARD OF LIGHTENING HOLE BS 485. MAINTENANCE STOP DRILLED CRACK AND PERFORMED HFEC INSPECTION TO VERIFY THE CRACK WAS CONTAINED, FABRICATED A DOUBLER, AND INSTALLED REPAIR IAW AWA ER 15-5234-02225-TB2.