What was found
SHORTLY AFTER TAKEOFF AT KTPA AIRPORT I NOTICED ABNORMAL RESISTANCE IN THE PITCH AXIS. THE AIRCRAFT DID NOT RESPOND TO FORWARD CONTROL INPUTS. IT WAS IMPOSSIBLE TO MAINTAIN ALTITUDE. THE AIRCRAFT CONTINUED CLIMBING WITH MAXIMUM FORWARD FORCE FROM BOTH CREW MEMBERS. WE FOLLOWED THE APPLICABLE ABNORMAL PROCEDURES. ONCE THE RT ELEV HYD OFF CIRCUIT BREAKER WAS PULLED, WE HAD CONTROL OVER THE AIRCRAFT AND COULD LEVEL OFF. WE DECLARED AN EMERGENCY AND RETURNED SAFELY TO KTPA. WE WERE VECTORED BY ATC TO LAND IN VISUAL CONDITIONS ON THE LONGEST RUNWAY AT KTPA. (RUNWAY 19R) WE TAXIED TO SIGNATURE AVIATION, WHERE WE CALLED FOR MAINTENANCE. THE CHARTER WAS CANCELLED.