What was found
FLAP INDICATOR, INDICATED A SPLIT FLAP CONDITION LEFT NEEDLE 2 DEGREES, RIGHT 5 DEGREES. THE FLIGHT DECLARED AN EMERGENCY AND RAN THE ABNORMAL CHECKLIST. FLIGHT LANDED FLAPS 15 DEGREES IAW CHECKLIST. USED ALTERNATE FLAP EXTENSION, LANDING WAS NORMAL. PERFORMED FSEU BITE, NO CURRENT FAULTS, FAULT HISTORY SHOWS 27-52259. CYCLED FLAPS AND SYSTEM CHECKS OK IAW FIM 27-51-00. THE AIRCRAFT WAS GROUNDED.