What was found
FLT 670 - MCO-GSO - AFTER REACHING FL 250, THE NR 1 ENG OIL FILTER BYPASS LIGHT BEGAN FLICKERING. THE NR 1 ENG WAS SHUTDOWN AND AN EMERGENCY WAS DECLARED INTO DAYTONA. AIR TRAN MECHANICS REMOVED THE ENG OIL FILTER AND INSPECTED. ENG OIL FILTER WAS CLEAN. MECH REPLACED THE FILTER AND RAN THE ENG. FILTER LIGHT CONTINUED TO FLICKER. OIL PRESS SWITCH WAS PLACED ON MEL AND THE A/C WAS RELEASED FOR FLT. PRIOR TO ASSUMING FLT 670, THE A/C HAD ARRIVED IN MCO FROM FLT 721 WITH THE NR 1 ENG OIL FILTER BYPASS LIGHT FLICKERING DURING TAXI. MECH T/S SYSTEM AND FOUND THE OIL FILTER BYPASS SWITCH CONNECTOR DIRTY. THE CONNECTOR WAS CLEANED AND POST MX ENG RUN WAS NORMAL. NR 1 ENG OIL FILTER BYPASS LIGHT REMAINS MEL.