What was found
T/O TEMP RT ENG 60 HIGHER THAN LEFT ENG. CRUISE TEMP RT 20 TO 30 HIGHER THAN LEFT. ALL PARAMETERS WITHIN LIMITS HOWEVER. GROUNDED - YES. PER B737-800 FIM 71-06 TASK 807, PERFORMED EEC BITE PROCEDURE PER FIM 73-00 TASK 801. #2 ENGINE, CHANNEL B T3 FAULT IS LOGGED (75-20832, T3 SIGNAL OUT OF RANGE) AND PROPERLY DEFERRED "PLT" ON L/P 12151554. NOTE THAT, PER SDS 73-21-00-008, THE EEC USES T3 DATA TO CONTROL THE HIGH PRESSURE TURBINE ACTIVE CLEARANCE CONTROL. WITH THAT DATA MISSING, THE EEC ALLOWS THE HPTACC A GREATER CLEARANCE BETWEEN TURBINE SHROUD AND CASE, RESULTING IN A PREDICTABLE INCREASE IN FUEL CONSUMPTION, CORRESPONDING W/ A HIGHER EGT FOR A GIVEN THRUST SETTING. AS A PRECAUTION, CHECKED THE ENGINE EXCEEDANCES PAGE W/ NO FINDINGS AND CHECKED #2 T3 INPUT MONITORING DATA, VERIFYING ITS INACCURACY. NO HISTORY PAST 30 DAYS.