What was found
WHILE AC WAS IN FOR HEAVY CHECK FOUND NR 2 PYLON AFT FIXED FAIRING FWD FRAME CRACKED. REPLACED FRAME PN 170-38300-422SD, IAW SRM 51-43-03, 51-43-04, SEE AAR NRC NR 4500827-4000-0016 FOR WORK PERFORMED. AC REMAINS IN YQG FOR COMPLETION.