What was found
LEFT BLEED DUCT LEAK AT FL 370 WITH ENGINE ANTI-ICE ON. COMPLETED QRH AND SECURED ENGINE ANTI-ICE AND LIGHT WENT OUT WITH NO SECONDARIES. REMOVED STAND OFF CLAMPS FOR ACCESS AND POSITIONING OF LEADING EDGE DUCTING. REMOVED AND REPLACED 5 WORN LEADING EDGE CLAMPS PER MM CHP 36-11-01-4. RE-INSTALLED STAND OFF CLAMPS AS WELL. PERFORMED FIRST LEAK CK WITH APU AIR PER JRH NO LEAKS NOTED. PERFORMED ENGINE RUN PER JRH AND RECHECKED TORQUE ON ALL REPLACED CLAMPS. NO LEAKS NOTED. CLOSED GEAR DOORS PER 32-10-00 AND A/C DOORS PER 52-48-03. LEADING EDGE PANELS NEED RE-INSTALL AND P-50 DOOR OPEN FOR FINAL CK OF CARD FOR FAULTS.