What was found
RT ENGINE EGT DROPPED TO ZERO APPROXIMATELY 12 MIN INTO FLT. EGT RETURNED TO NORMAL WITHIN 5 SEC. CONT NXT MR SAMC TEXT STBY EGT ALSO ZERO. ENG OPERATIONS NORMAL, EGT NORMAL FOR DURATION OF FLT. NEED TO CHECK ALL CONNECTIONS FOR SECURITY ESPECIALLY W6 CONNECTIONS. ACCOMPLISHED MM 71 PIMU CHECK FOR MESSAGES. ALSO CHECK STUDS & LUG CONNECTIONS IN J BOX & AT EGT PROBES. CHECK HARNESSES A ROUND EXH CASE TO J BOX & W6 HARNESS FWD OF J BOX. TROUBLE SHOT IAW FIM SUSPECT EEC. R & R IAW AMM 73-21-04-401, CHECKED GOOD. PIMU CHECKED GOOD.