What was found
AIRCRAFT WAS NOT GROUNDED: AN EMERGENCY WAS DECLARED ON FINAL APPROACH TO JFK DUE TO FLAP PRIMARY FAIL EICAS MESSAGE WHEN FLAPS WERE TRANSITIONING FROM 20 TO 25. AIRCRAFT LANDED SAFELY AT JFK WITHOUT FURTHER INCIDENT. MAINTENANCE ACCOMPLISHED FIM TASK 27-51-00-810-806 FOR MAINTENANCE MESSAGE 27-20431, FLAP UNCOMMANDED MOTION PROBLEMS - FLAP SLAT ELECTRONICS UNIT 1. MESSAGE INTERMITTENT, NOT ACTIVE OR LATCHED. AIRCRAFT OK FOR SERVICE.