What was found
IGN OVD ON, ENG ANTI ICE ON, WING ANTI ICE ON, PACKS 1 & 3 ON, PACK 2 OFF. LVL III AIR MANIFOLD 1 FAIL ALERT, WING ANTI ICE 1 ALERT, LVL II AND LVL 1 AIR SYS 1 OFF ALERT. RAN CHECKLIST FOR AIR MANIFOLD 1 ALERT, AND WING ANTI ICE I DISAGREE. ALERTS EXTINGUISHED. PERFORMED PNEU SYSTEM CONTROL BITE TEST IAW MM 36-10-00-2-0, SATISFSACTORY. NO LATCHED FAULTS INDICATED. ACCOMPLISHED MANIFOLD FAIL DETECT SYS TEST IAW MM 36-23-00-2-0. ALL ACCOMPLISHED SATISFACTORY. PERFORMED MANIFOLD DECAY TEST USING THE APU, IAW MM 36-10-00-0-0, TEST PERFROMED SEVERAL TIMES WITH NO DEFECTS NOTED, DECAY TIMES ALL WITHIN LIMITS. NO LATCHED FAULTS IN CFDS AFTER EACH TEST. APU RAN IAW JRH CHAP 6 WITH NO FAULTS. ALL THREE A/C PACKS OPERATED NORMAL. ACFT OK FOR SERVICE.