What was found
PIT FLT 1512 - ON APPROACH TO PIT, AS CREW SELECTED FLAPS PAST 5 UNITS, A SPLIT FLAPS CONDITION OCCURRED AND THE FLAPS STOPPED MOVING. CREW RETURNED FLAP LEVER TO 5 UNITS AND FLAPS CAME BACK TO A SYMMETRICAL POSITION. FLIGHT LANDED WITHOUT FURTHER INCIDENT AT 5 UNITS. AN EMERGENCY WAS DECLARED. MAINTENANCE REMOVED AND REPLACED THE FLAP POSITION INDICATOR PER MM 27-58-41-4. OPERATIONAL CHECK NORMAL. ALSO, REMOVED AND REPLACED A WORN RIGHT-HAND INBOARD FOREFLAP AND TOGGLE ASSEMBLY. OPERATIONAL CHECK OF FLAPS NORMAL.