What was found
PASSING 10000FT CA AIRSPD INDICATOR VARIED -/+ 20KTS FO AND STDBY IAS OK ACCMP IR1 SYSTEM TEST REF AMM 34-14-00-740-004-A. IR1 FAILS WITH MESSAGE MMR1-GPSSU1(40RT1-1SN1) ADIRU1(1FP1). SLAVED IN NEW ADIRU 1 AND SWAPPED MMR1 AND MMR2 REF TSM 34-36-00-810-874-A. NO HELP AND ADIRU 1 WILL NOT ALIGN. REF POST FLT REPORT AND SEE TSM 34-13-81-810-823A ADIRUS RETURNED TO ORIGINAL CONFIGURATION. MMRS RETURNED TO ORIGINAL CONFIGURATION. REPLACED #1 AIR DATA INERTIAL REFERENCE UNIT PER AMM REF 34-12-34-000-001-A/400-001-A. PERFORMED GROUND SCANNINING OF THE AFS PER AMM TASK 22-91-710-001-A; PERFORMED OPERATIONAL TEST OF THE LAND CAT 3 CAPABILITY- ILS LAND TEST OK; ACFT REMAINS LAND CAT 3. ALSO REF TSM 34-14-00-810-804-A.PARTS USED: 31-4110-9-0001,QTY :1 31-3411-9-0002,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1712852 SN OFF 2952 UNIT, AIR DATA OFF 31-3411-9-0002 2952 ON 31-3411-9-0002 0634