What was found
REAR FUSELAGE I, LH SILL BTW FRAME 61-65 FOUND CORRODED. LH SILL BTW FR 64-65 BLENDED OUT OF LIMIT. REAR FUSELAGE I, LH CARBON BULKHEAD REMOVED FOR ACCESS. RF I, L SILL BTW FR 61-65 REMOVED FOR REPLACEMENT. RF1, LH SILL BTW FR61-65 INSTALLED. RD1, LH CARBON BULKHEAD REINSTALLED