SMA AND HELICOPTER HAVE NMAC OVER RWY 8L AT XXX.

Narrative

I WAS LNDG AT ZZZ ARPT. I HAD BEEN CLRD TO LAND FOLLOWING A HVT. I REQUESTED A LONG LNDG DUE TO WAKE TURB. CTLR APPROVED. AS I TURNED TO FINAL AN AIRLINER FOR THE S RWY DISTRACTED THE CTLR. HE COULD NOT RAISE S ON 120.9 AND KEPT TALKING TO CTLR ON 118.7. CTLR WAS ALSO HANDLING AN EMS HELI ARRIVING FROM THE NE. TWR CLAIMS THEY DIRECTED HIM TO TURN S AND CROSS N RWY; THEN PROCEED TO EMS RAMP. INSTEAD; HE MADE A DIRECT 45 DEGS APCH; WHICH BROUGHT HIM DIRECTLY ACROSS MY PATH. HAD I NOT REQUESTED A LONG LNDG AND NOT SLOWED MY DSCNT; WE WOULD HAVE COLLIDED--NO DOUBT IN MY MIND. CONTRIBUTING FACTORS WERE THAT THE CTLR WAS DISTRACTED BY THE AIRLINER ON 119.7 AND THE FACT THAT EITHER THE HELI PLT OR THE CTLR FAILED TO SEE WHAT WAS HAPPENING. THE ONLY THING THAT SAVED MY LIFE AND THE 3 PEOPLE ON THAT HELI WAS THAT MY 70 YR OLD INSTR POUNDED INTO MY HEAD TO SEE; LOOK AND AVOID--AND TO LAND LONG BEHIND HVY JETS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: THE HELI HAD BEEN CLRED FOR APCH WHICH SHOULD HAVE CROSSED THE RWY FURTHER E AND NOT INTERFERED WITH THE RPTR. THE HELI PLT IS PURPORTED TO HAVE MISUNDERSTOOD AND READ BACK ANOTHER ROUTE OF APCH; BUT THE CTLR MISSED THE READBACK DUE TO HIS DISTR WITH THE ACR LNDG ON RWY 8R. THERE WERE NO PATIENTS ABOARD THE HELI. THE HELI PASSED UNDER THE SMA AND RPTR STOPPED DSCNT TO EVADE. HE TALKED TO THE TWR SUPVR AFTER THE EVENT.