What was found
EN ROUTE SAN-PHX. ON APPROACH, FLAPS WOULD NOT GO PAST FLAPS 1 ON GAUGE. SPLIT FLAP NEEDLE INDICATION. EMERGENCY DECLARED. CREW TAPPED ON INDICATOR, WAS ABLE TO LOWER FLAPS. NORMAL APPROACH AND LANDING. MAINTENANCE REPLACED FLAP POSITION INDICATOR, AND FLAP POSITION TRANSMITTER, IAW BMM 27-58-12.FLAP INDICATOR, P/N 2061-14-1, S/N OFF 1731 TSR 6.57HRS.