What was found
FLIGHT 3729, CREW REPORTED THAT WHILE EXPEDITING A DESCENT WITH FLIGHT SPOILER DEPLOYED, RECEIVED AN EICAS CAUTION FOR MESSAGE INBOARD FLT SPOILERS AND INBOARD SPOILERONS AT 2700 FT PER MIN. MESSAGE STAYED ON. THRUST LEVERS AT FLIGHT IDLE WHEN THE MESSAGE APPEARED. DECLARED AN EMERGENCY & LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REMOVED AND REPLACED RT INBD MULTI FUNCTION SPOILER PCU 32 IAW MM 27-62-01. AIRCRAFT RETURNED TO SERVICE.