What was found
DURING CLIMB OUT AT 3000 FT, RECEIVED A LEVEL 3 AIR MANIFOLD 1 FAIL AND AURAL WARNING. LEVEL AT 5000 FT RAN QRH. DUMPED FUEL AFTER 3 MINUTES, SECOND PRV CLOSED AND BOTH SYSTEM 1 & 2 RED ON AIR SYNOPTIC. CURRENT FAULT SHOWS 'MFC MON 2 RLY'. LAST LEG FAULTS HAS 10 FAULTS. PNEU Z11 OVERHEAT, PNEU Z7B OVERHEAT, PNEU Z7B OVERHEAT, MFC PNEU 1 OUT, MFC MON 1 RELAY, PNEU 2 OUT, PNEU Z7A OVERHEAT, PNEU 1 Z4 OVERHEAT, MFC MON 2 RELAY, PNEU Z5 OVERHEAT. REPLACED THE ZONE 5 SENSING ELEMENT D1-38E IAW AMM 36-23-07-4, CHECKED GOOD. INSULATION RESISTANCE CHECKED, BOTH PASSED IN ZONE 5 AND ZONE 7B ELEMENT IAW WDM 36-23-02, PG1, SH1. APU PNEUMATIC DECAY CHECKED IN 1-2-AND 3 SYSTEM, ALL PASSED.