What was found
AFTER TAKEOFF, NR 1 AND NR 2 BLEED FAULT LIGHTS AND APU MANIFOLD LIGHTS CAME ON AND WOULD NOT RESET. DUMPED 18,000 POUNDS OF FUEL AND RETURNED TO FIELD FOR A SAFE LANDING. FOUND NR 2 ENGINE BLEED AIR DUCT IN AIR CONDITIONING BAY CRACKED. REPLACED DUCT IAW 36-11-00 PG 605, LEAK CHECKED IAW 71-00-00. CHECKED FAULT LIGHTS IAW 26-16-00 PAGE 501, ALL SYSTEMS WORK NORMAL. AIRCRAFT RELEASED TO SERVICE.