EA50 FLT CREW EXPERIENCED A PITCH TRIM MALFUNCTION AND RETURNED TO DEP ARPT FOR LNDG. TURN AND DESCENT WERE INITIATED PRIOR TO OBTAINING CLRNC.

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DURING MAINT FERRY FLT CREW EXPERIENCED ELEVATOR TRIM FLT CTL DEGRADATION REQUIRING IMMEDIATE RETURN TO ZZZ; CREW REQUESTED AN IMMEDIATE TURN AND DSCNT BACK TO ZZZ. CREW THOUGHT THEY RECEIVED AN IMMEDIATE CLRNC TO 4000 FT AND TURNED AND DSNDED TOWARD ZZZ. WHEN QUERIED BY ATC AS TO NATURE OF PROB AND IF FURTHER ASSISTANCE WAS NECESSARY; CREW SAID IT WAS A FLT CTL ISSUE; BUT MANAGEABLE AND DIDN'T FEEL NECESSARY TO DECLARE EMER. WE WERE IN VISUAL CONDITIONS AT ALL TIMES AND COMPLETED UNEVENTFUL APCH AND LNDG. DURING FURTHER CONVERSATION WITH ATC ON THE TELEPHONE AFTERWARDS IT APPEARED THAT THE DSCNT AND COURSE CHANGE CLRNC MAY NOT HAVE BEEN AS QUICK AS CREW THOUGHT; BUT DUE TO THE HEAT OF THE MOMENT AND TASK SATURATION THE CREW THOUGHT IT WAS IMMEDIATE. THERE WERE NO CONFLICTS WITH ANY OTHER ACFT AND FLT ENDED WITHOUT FURTHER INCIDENT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE REPORTER STATED THAT ALTHOUGH THE ACFT WAS CONTROLLABLE; THE FLT CREW FELT THAT AN IMMEDIATE RETURN TO THE DEP ARPT WAS NECESSARY. THEY DID NOT DECLARE AN EMER; BUT IN THEIR EAGERNESS TO RETURN; THEY INITIATED A TURN AND DESCENT BEFORE RECEIVING CLRNC FROM ATC. COMMUNICATION WITH ATC AFTER LNDG REVEALED THAT NO TFC CONFLICT WAS CREATED BY THE MANEUVER.