What was found
BOS - FLT 663 - AFTER TAKEOFF FROM BOS, DURING FLAP RETRACTION, THE FLAP INDICATOR SHOWED A FLAP ASYMMETRY. CAPTAIN DECLARED AN EMERGENCY AND ACCOMPLISHED QUICK REFERENCE HANDBOOK PROCEDURES. FLIGHT RETURNED TO FIELD AT BOS AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND THE FLAP POSTION INDICATOR AT FAULT. REMOVED AND REPLACED FLAP POSITION INDICATOR. INSPECTED FLAPS. NO FAULTS NOTED. OPERATED FLAPS SEVERAL TIMES. OPERATIONAL CHECK GOOD. (M)