What was found
WHILE ACCOMPLISHING SB747-53A2562 R3, AT STA 260 WL 20 RH, FOUND EXISTING HOLE SIZE 04 EA DEVIATED FROM DRAWING 141U1192. EXISTING HOLE SIZE = 3/16, DWG HOLE = 1/4; FOUND SHORT EDGE MARGIN- FITTING COMMON TO SEAT TRACK AND CHORD P/N: 65B11784U508.(<P >R/H ANGLE AND UPPER CHORD AT STA 260 WL 20 (04 EA) FASTENER HOLES SHORT EDGE MARGIN FOUND ACCEPTABLE AS PER EN 3581-26 REV. 0. REPAIR CLASSIFIED AS "MAJOR" REPAIR WITH FIRST AND SECOND STAGE APPROVAL. NO ADDITIONAL STRUCTURAL WORK REQUIRED. INSPECTION THRESHOLD OF 23,941 TOTAL FLIGHT CYCLES. TO BE COMPLIED WITH SUBSEQUENT TO FAA APPROVAL REQUIREMENTS BEFORE REACHING THE INSPECTION THRESHOLD. NO FURTHER DEFECTS NOTED.</P>)