What was found
R ENG SPEED CARD AND R ENG BLEED OFF AND CTR R FUEL PUMP OFF AT SAME TIME AS RT ENG N3 FLUCTU PER CREW DEBRIEF CTR R FUEL PUMP, R PACK OFF & R ENG BLEED. N3 WAS FLUCTUATING FULL SCALE. PACK WAS FLUCTUATING OFF AND ON. TOTAL FUEL AFTER LADING IS 35.2 REMOVED AND REPLACED TACHOMETER TRANSMITTER ON ENGINE 2 IN REF TO AMM 77-12-02-004-001-R00/ 77-12-02-404-005-R00 PARTS USED: 19-7712-9-9001,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1053360 SN OFF 3351 SENSOR, SPEED, OFF 19-7712-9-9001 3351 ON 19-7712-9-9001 1552 TROUBLE SHOOT N3 INDICATION PROBLEM IN REF. FIM 77-12 FAULT TREE 805. FOUND N3 TACHOMETER TRANSMITTER AT FAULT. REMOVED AND REPLACED TRANSMITTER IN REF.TO A.M.M. 77-12-02/401. OPS CHECKED ENGINE TACHOMETER SYSTEM OPERATIONAL TEST REF. A.M.M. 77-12-00-715-001-R02. OPS CHECKED NORMAL.