What was found
NR1 PYLON LT SIDE SKIN 1 EA AND RT SIDE SKIN HAS 2 EA ELONGATED HOLES AT AFT BULKHEAD. COMPLIED WITH STAM EA 757-5450-16 F2907 REV - ELONGATED FASTENER HOLE FOUND IN THE RT AND LT SKIN OF NR1 PYLON COMMON TO BULKHEAD AT PP STA 201.5. EA F-5450-14227 NACELLES/PYLON-(AD2003-18-05)-EO F-5450-7-5010, NR 1 ENGINE PYLON SIDE SKIN DAMAGE HOLES ISSUED TO TRACK REPAIR IN SYS FAA FORM 8100-9 DATE 10-05/10 ATTACHED.PYLON PN 311N3000-25, SN 000440. MAJOR REPAIR.