What was found
HFEC INSPECTION DETECTED A CRACK ON RT SIDE LONGERON AT FS 639 AND AT RT SIDE LONGERON 1 AT FASTENER HOLE. CUT OUT CRACKED AREA, APPROXIMATELY 10 INCHES IN DIAMETER AND CONFIRMED CRACK CONTAINED PER HFEC INSPECTION. CUT OUT CRACK, APPROXIMATELY.875 INCHES. FABRICATED AND INSTALLED INTERNAL AND EXTERNAL DOUBLERS IAW DC9 SRM 51-10-3, 51-30-2, 51-30-5, 53-04 FIG 40, AND DRG NR SRO 09530125.