What was found
DIAGNOSTICS REPORTS #1 ENGINE TREND DATA SHOWS AN INCREASE IN DELTA EGT AND A DECREASE IN HOT DAY MARGIN. ALL OTHER PARAMETERS NORMAL. EGT INDICATION ERRORS ARE SUSPECT. GROUNDED - YES. ACCOMPLISHED TASK CARD 78273000, ONE FAULT FOR #1 ENGINE, 77-10851 THE BOTTOM RIGHT ET SIGNAL (T49.5S2) IS OUT OF RANGE ON LEGS 2,4,7,8. ACCOMPLISHED EGT IND SYS T/S AND CONNECTOR CLEANING PER AMM 77-21-00-140-801, NO DEFECTS NOTED. ACCOMPLISHED RESISTANCE CHECKS PER AMM REF 77-21-01-200-801-F00, NO DEFECTS NOTED.