What was found
WHILE A/C WAS IN FOR HEAVY CHECK FOUND FWD CARGO DOOR. CUT OUT CORROSION FOUND ON AFT CORNER SEAL REST AT LOWER BEAM SILL AT FR 27 AND STR 25L. REPLACED CORNER SEAL REST PN 170-66803-404, IAW EMB SRM 51-21-01, AMM 20-10-01. SEE AAR NRC NR 4500797-1000-0036 FOR WORK PERFORMED. A/C REMAINS IN YQG FOR COMPLETION.