What was found
DURING C-CHECK, CRACKING WAS FOUND IN THE 65B94052-1 NR 2 PYLON RT SKIN ASSY AT THE NAC STA 248 PRECOOLER EXHAUST. CRACK WAS REPAIRED BY TRIMMING OUT THE DAMAGE AND RESTORING THE SURFACE FINISH IAW RFTA 00664-0005, REV A AND REA MF00664R0005, REV A (FIG 1 & 2). THIS EO DOCUMENTS THE REPAIR OF THE SKIN IAW RFTA 00664-0005, REV A AND REA MF00664R0005, REVISION A. THE REPAIR IAW THIS EO AND RFTA 00664-0005, REV A AND REA MF00664R0005, REVISION A ARE FAA APPROVED BY MFG AR ON THE FAA FORM 8100-9 DATED 25MAR2010 (FIGURE 3). THE FAA FORM 8100-9 DATED 25MAR2010 REQUIRES CONTINUED INSP IAW SB 747-54A2223, REV 0 AT 18 MONTH INTERVALS AFTER THIS REPAIR. THE REQUIRED INSP IS ACCOMPLISHED IAW EO 4754A233 AND NO ADDITIONAL INSP ARE REQUIRED IAW THIS EO. THE REPAIR ACCOMPLISHED IAW THIS EO IS MFG AR APPROVED IAW THE FAA FORM 8100-9 DATED 25MAR2010 (FIG 3).