What was found
CREW ADVISED, THE RIGHT PYLON OVERHEAT ILLUMINATED IN CLIMB AT FL 17.0 WITH NAC AND ANTI-ICE SELECTED TO THE OFF POSITION. CREW REDUCED RIGHT ENGINE N1 TO 75 PERCENT FOR 1 MINUTE THEN TO IDLE FOR 2 MINUTES. CAS MESSAGE WOULD NOT EXTINGUISH. CREW FOLLOWED ACFT CHECKLIST AND SHUTDOWN ENGINE IN FLIGHT. NO PAX ON BOARD. FOUND CLAMP UNDER RT PYLON LP DUCT NEAR S-144 OVERHEAT SWITCH NOT SECURE, LEAKING AIR. SECURED CLAMP AND RAN ENGINES AT POWER, NO LEAKS NOTED. OPS CHECK GOOD.