What was found
HEALTHNET 1 WAS DISPATCHED FOR AN IFT FROM RUBY TO WEST PENN. WE WERE TURNING LONG FINAL FOR BRAVO PAD, AND I WAS GETTING THE AIRCRAFT IN AN APPROACH PROFILE. WHILE I WAS LOWERING THE COLLECTIVE, IT HIT A STICKING POINT ABOUT HALFWAY DOWN. I CALLED FOR THE ABORT ON THE LANDING AND INCREASED THE COLLECTIVE PITCH TO GAIN ALTITUDE AND WORK ON THE PROBLEM. CHECKED TO SEE IF ANYTHING WAS UNDER THE COLLECTIVE AND MADE SURE THE FRICTION LOCK WAS ALL THE WAY RELEASED. WITH SIGNIFICANT DOWNWARD PRESSURE I WAS ABLE TO BREAK THE COLLECTIVE LOOSE. THE COLLECTIVE STUCK TWO ADDITIONAL TIME BEFORE WE WERE ABLE TO KEEP IT IN A LOWER POWER SETTING AND RTB SAFELY.