What was found
WHILE IN HEAVY CHECK FOUND CORROSION AFT WET AREA ON GUSSET AT FRAME 90 AND LH TRACK BEAM. REMOVED GUSSET AT FRAME 90 (AFT WET AREA) LOCATED AND DRILLED , APPLIED ALODINE ON HOLES RIVETS GUSSET AT FRAME 90 (AFT WET AREA). REF EMB SRM 51-40-08, SRM 51-40-02 ,SRM 51-23-04 PO# 243026 INSTALLED NEW GUSSET AT FRAME 90 (AFT WET AREA). REF EMB SRM 51-40-08, SRM 51-40-02