What was found
TAT PROBE EICAS MSG. REF AMM 30-33-00-715-001. PERFORMED OPS TEST OF TOTAL AIR TEMP PROBE HEAT SYSTEM. TEST FAILED WITH L ENGINE SPEED CARD IN TEST POSITION. TAT LIGHT REMAINS ON WHEN IT SHOULD BE OFF. ALSO EICAS MESSAGE TAT PROBE IS DISPLAYED ON EICAS. REF STEP D.(2)(A) AND STEP D.(2)(B). CONTINUING TO TROUBLESHOOT STARTING WITH FIM TASK 30-33-00-815-802. REF AMM TASK 34-12-02-404-008. TOTAL AIR TEMPERATURE PROBE INSTALLATION. REPLACED PROBE. OPS TEST GOOD