What was found
SHORTLY AFTER TAKE OFF WE STARTED EXPERIENCING A SERIES OF CAS MSGS. AT FIRST A FEW. THEN MANY. AT THE HEIGHT 2 PAGES FULL OF CAS MSGS. AT THE LAST 1/3 OF THE FLIGHT MOST HAD RESOLVED THEM SELVES AND WERE REDUCED TO A FEW. THESE ARE SOME OF THE CAS MSGS WE EXPERIENCED: - RED LAV SMOKE - AMBER SPOILER FAULT - AMBER FLAPS FAIL - CYAN STAB TRIM FAULT - CYAN ENG MACH HOLD FAIL - CYAN CAS MISCOMPARE - CYAN IAPS FAN FAULT. AT SOME POINT WE LOST THE PF PFD MFD AND COM1 ALONG WITH A NUMBER OF OTHER LEFT SIDE SYSTEM CAS MSGS. CORRECTIVE ACTION: REMOVED FAILED IAPS ENVIRONMENTAL CONTROLLER (IEC) PN 822-1131-001 SN 4731VH AND INSTALLED A REPAIRED IAPS ENVIRONMENTAL CONTROLLER (IEC) PN 822-1131-001 SN 426PKG. PERFORMED OPS CHECK OF IAPS ENVIRONMENTAL CONTROLLER (IEC) WITH NO DISCREPANCIES NOTED. OPS CHECK SATISFACTORY. NJA HAS ELECTED TO SIGN THIS DISCREPANCY OFF. WORK PERFORMED REF CL-350 AMM CH 31-45-13.