What was found
NR 1 AFT PYLON ASSEMBLY, APPEARS TO HAVE CORROSION ON THE FRONT STRUCTURE IN BETWEEN THE FWD ENDS, OF THE LWR BEAMS. R & R CORRODED PN 313T1380-22 IAW SRM 51-40-02. HYD BAY FWD LWR BEAM CROSS PIECE ATTACH FITTING. SDR INFO PN 313T1380-22, SN NSN, PART NAME SPAR CHANNEL, EXACT PYLON LOCATION ON ACFT FROM 308.00 TO 308.00, EXACT WL LOCATION ON ACFT FROM 130.17 TO 130.17. ACFT WAS GNDED.