What was found
M/C LIGHT AND ENG. ILUMINATED AT 70KTS ON TAKEOFF ROLL PERFORMED EEC BITE TEST, FOUND INTERNAL EEC FAULT 73-20211 , PERFORMED DEU TEST PASSED. POSSIBLE BAD #1 EEC INTERNAL FAILURE. 73-20201 AND 73-20221 ,ALSO CHECK FOR HARNNESS LOOSENESSES AT FURTHER T/S REQUIRED. #1 EEC BOX NO ISSUES FOUND, NEEDS FURTHER T/S. MOVED AND REPLACED #1 ENG EEC REF AMM 73-21-00 OPS CHK NORMAL PARTS USED: 29-7321-9-0013,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1504238 SN OFF 0647 CONTROL, ELECTR OFF 29-7321-9-0013 0647 ON 29-7321-9-0013 4981 ACCOMPLISHED IDT INSPECTION OF E1 ENG EEC INSTALLATION REF GMM 09-10-05. REMOVED AND REPLACED #1 ENG EEC REF AMM 73-21-60 RAN ENGINE OPS CHK NORMAL.