What was found
#2 ENG EGT HAS A RED BOX INDICATION. GROUNDED - YES. PERFORMED FIM 71-06 TASK 805. FIRST PART OF FIM CHECKS EGT SYSTEM FOR ACCURACY PER AMM 77-21-00 PAGE 201 AND THIS CHECK FAILS. S1-S4 AND S2-S3 ARE NOT WITHIN THE REQUIRED TOLERANCE OF 25%. REFERENCE LOG PAGE 60520566 FOR DISCREPANCY DOCUMENTATION AND REPAIR. THIS CLEARS PLT FOR RED BOX EXCEEDENCE, REMOVED C/N 17079419, SEAMC DARWIN NOTIFIED. LP 60520566: ACCOMPLISHED #2 ENGINE EGT CLEANING AMM 77-21-00-140-801 REF LP 60520567 FOR PLT DEFERRAL RECHECK. NUMBERS BEFORE CLEANING S1=62.15 S2=28.94 S3=45.14 S4=66.73 NUMBERS AFTER CLEANING S1=48.79 S2=25.86 S3=25.47 S4=48.28 GROUND VERIFICATION PASS SEAMC PETER NOTIFIED.