What was found
RIGHT IRS FAULT AT FL330 1HR IN. AND SPEED TRIM FAIL. PERFORMED FIM 34-21 TASK 826. MAINT MESSAGE 34-22992 SHOWS AS AN ACTIVE FAULT. FIRST STEP IN FIM IS TO REPLACE RIGHT ADIRU PER AMM TASK 34-21-01-000-801. PERFORMED FIM 34-21 TASK 826;REMOVED AND REPLACED RIGHT AIR DATA/INERTIAL REFERECE UNIT TASK REF AMM 34-21-01-000-801 AND 34-21-01-400-801,AFTER ACCOMPLISHED OPS CHECK REF AMM 34-21-00-710-801 THE MESSAGE FAULT DOES NOT SHOW.PERFORMED LAND VERIFY TEST PER AMM 22-11-00-700-801. LAND VERIFY TEST PASS.