What was found
REMOVED BOTH HORIZONTAL STABILIZERS THAT HAD BEEN LAST INSTALLED OVER 5 YEARS AGO. FOUND EXCESSIVE CORROSION IN SPAR CLAMP AREA ON RIB CLOSEST TO TAILBOOM. REQUIRES TOTAL RIBE REPLACEMENT OF $1966 RIB. INSPECTED OTHER RIB ALSO HAD CORROSION & PIECE MISSING SO REPLACED 206-020-123-047S RIB ON THAT SIDE ALSO. THIS IS SECOND REPORT IN LESS THAN YEAR ON SAME PARTS. SUGGEST BELL HELICOPTER INSERT A 3 YEAR INSPECTION IN MAINTENANCE MANUAL, ESPECIALLY WHEN AIRCRAFT IN CORROSIVE ENVIRONMENT LIKE THE STATE OF FLORIDA.