What was found
FLIGHT 5301 - DURING DESCENT THROUGH 17,800FT AT 280 KTS INTO SRQ, RECEIVED FLAPS HALF SPEED MESSAGE FOLLOWED BY FLAPS FAIL CAUTION MESSAGE. FLAPS WERE AT 0 DEGREES. EMERGENCY DECLARED, AIRCRAFT LANDED SAFELY. REMOVED AND REPLACED FECU. ALSO, COMPLIED WITH TASK CARD SI-2-27I0002, FLAPS FAIL CAUTION MESSAGE FOLLOW-UP MAINTENANCE ACTION.