What was found
MSP - FLT 3002 - AFTER TAKEOFF FROM MSP, THE CAPTAIN'S ALTIMETER, ALTITUDE ALERTER, TCAS, AND TRANSPONDER MODE 'C' FLAGGED INOPERATIVE. THE AIRCRAFT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE PERSONNEL REPLACED THE NR 1 ALTIMETER. ALL SYSTEMS OPERATED SATISFACTORILY. (X)