FLT CREW OF BE19 ENCOUNTER STUCK ELEVATOR ON ROTATION. EXTRA FORCE RELEASES THE CTLS AND THE FLT CONTINUES TO A MORE SUITABLE ARPT (THEIR DEST) WHERE THEY LAND AND SEEK MAINT.

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WE WERE DEPARTING RWY 21 AT ROCKLAND; ME; ENRTE TO AUGUSTA; ME; A DISTANCE OF LESS THAN 30 MI. WHEN MY FO CALLED 'V1; ROTATE' AT 100 KIAS; I PULLED ON THE YOKE WITH BOTH HANDS AND IT DID NOT MOVE. IT WAS STUCK; AND I PULLED SIGNIFICANTLY HARDER. SOMETHING IN THE SYS RELEASED; THE YOKE MOVED QUICKLY AFT AND THE ACFT JUMPED INTO THE AIR. RATHER THAN RETURN TO RKD; WHICH HAD MEN AND EQUIP WORKING ON RWY 13/31 (THE LONGER RWY); I ELECTED TO CONTINUE TO AUGUSTA; ONLY 12 MINS AWAY. ALL WAS NORMAL ENRTE EXCEPT THE ELEVATOR TRIM MOVED VERY SLOWLY TO NOSE UP; REQUIRING ABOUT 1/2 UNIT NOSE DOWN TRIM EVERY 1-2 MINS. AFTER LNDG IN AUGUSTA; A FLT CTL CHK AND AN EXTERNAL INSPECTION REVEALED NO ABNORMALITIES. I ENTERED THE EVENT IN THE MAINT LOG IMMEDIATELY AND CONTACTED MY COMPANY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR ADVISED THAT DUE TO THE PRIMARY FLT CTL WRITE-UP MADE AT THE CONCLUSION OF THE FLT; THE FAA INVESTIGATED AND HAS DETERMINED THIS EVENT TO BE AN OFFICIAL INCIDENT. THE INITIAL DETERMINATION OF THE CAUSE OF THE PROB IS SOME MISSING FASTENERS ON 1 ELEVATOR HINGE.