What was found
DURING HEAVY MAINTENANCE, (REF A17-708-03 WEIGHT VARIANT UPGRADE FOR A/C N593JB) SRM REPAIR SURVEY -FUSELAGE-CHAFE MARK, FR 34 AND STR 43L-43R; REF AEROMAN N/R 2021-224304, PERFORMED PERMANENT REPAIR LOC ON FR 34 BTW STR 43LH TO STR 43RH LOWER FUSELAGE THIS REPAIR IS CATEGORY A AND NO FURTHER INSPECTION IAW EA 53-0278-21, RDAF 80926508/003/2021 ISSUE A AND EC A21-671-01. CLASSIFIED AS A MAJOR REPAIR.