What was found
AFT CARGO BAY BETWEEN STA 727D AND 727E BL 0 WL 148.8 TOP SIDE OF ANTENA IN CARGO BILGE IS COROODED AS MARKED / REMOVED CORROSION IN AFT CARGO BAY BETWEEN STA 727D AND 727E BLO TOP SIDE OF VHF ANTENNA DOUBLER IAW SRM 51-10-02-0G-0. VERIFIED MATERIAL LOSS; NO ALLOWABLE LIMITS IN THE SRM. INSTALLED NEW ANTENNA DOUBLER IAW SRM 51-40-02-0G-0 AND BOEING DRAWING 143A3280 REV - . INSTALLED VHF ANTENNA IAW AMM 23-12-11-400-802 AND AMM 23-12-00-730-801. BOND CHECK AND OPS CHECK GOOD. A66200; A98645; WN0494.