What was found
R ENG BLEED OFF CAUTION MESSAGE CAME ON AT 110 KNOTS ON TAKEOFF ROLL. CONTINUED TAKEOFF. RAN QRC AND RESET BLEED SWITCH AND IT ILLUMINATED AFTER 5 SECONDS ALONG WITH R ENG BLEED OFF CAUTION MESSAGE. DEBRIEFED CREW AND CONFIRMED ABOVE INFO NOTED ACCURATE. REF CURRENT MEL 2151B RIGHT ENGINE BLEED OFF MAY APPEAR DURING ANY PHASE OF FLIGHT DUE TO INOP RIGHT PACK, AIRCRAFT OK TO CONT FOR NORMAL OPERATION. CONCURRED WITH FLIGHT CREW. AFTER GVI FOUND ADJACENT SECTION OF DUCT DAMAGED. UPON FURTHER INSPECTION FOUND CRACKS ON CONDENSER HEAT EXCHNAGER. UPON FURTHER INSPECTION FOUND 3 CRACKS ON REHEATER FOR THE AIR CONDITIONER. INSTALLED PACK REHEATER REF AMM21-51-07-404-014 OPS CHECK STIL NEEDED PARTS USED: 75-2152-9-9003,QTY :1 ADD EMP:U414804 INSTALLED PLENUM AND DUCT ASSY. REF. AMM. 21-51-16-404-005, BEGAN INSTALLING CONDENSER UP TO AND INCLUDING STEP.(6) WITH PARTS INFO ENTERED FOR NEW RIGHT CONDENSER INSTALLATION. PARTS USED: 75-2152-9-9004,QTY :1