What was found
ON TAKEOFF ROLL AT DFW EN ROUTE FOR PHX NO. 2 ENGINE N2 INDICATOR HAD ERRATIC FLUCTUATION BETWEEN 30-40 PERCENT, REJECTED TAKEOFF BELOW 80 KTS. MAINTENANCE ISSUED MEL 77-3, COND. 2 (NR 2 ENG TACH GEN INOP). WHEN AIRCRAFT ARRIVED IN PHX MAINTENANCE REMOVED AND REPLACED NR 2 ENGINE CONTROL ALTERNATOR SPEED SENSOR IAW BMM 73-21-08, PG. 401, ENGINE RUN OPERATIONAL CHECK WAS GOOD. VENDOR FUNCTIONAL TEST AND TEARDOWN OF STATOR ALTERNATOR S/N GJAG6485M WAS FO FAULT FOUND, UNIT TESTED IAW CMM 77-11-21, REV. 03. .