AN EXPERIENCED PVT PLT WHO APPEARED TO HAVE LITTLE INST EXPERIENCE; IMPROPERLY SHOT THE LOC APCH AT CXY AND SET OFF THE CTLR'S LOW ALT WARNING.

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IT WAS HARD IMC FROM LDJ TO CAPITAL CITY ARPT (CXY) AT HARRISBURG; PA. I WAS AT 6000 FT MSL (S OF THE APCH RTE) AND BEGINNING TO BE CONCERNED ABOUT THE DSCNT BECAUSE OF PROX; WHEN THE APCH CTLR TOLD ME THAT BECAUSE OF THE CLOSENESS; HE WOULD BRING ME DOWN THROUGH THE LOC AND THEN BACK IN TO THE LOC FROM THE L. COMING BACK TO THE LOC; IT DID NOT SEEM TO BE CTRING (AND JUST AS IT WAS CTRING; BUT BEFORE I COULD INFORM THE CTLR); THE CTLR CANCELED THE APCH; TOLD ME TO CLB BACK TO 3000 FT; AND GAVE ME VECTORS TO DO IT AGAIN; WITH WHICH I COMPLIED. ON THE APCH THE SECOND TIME; I ADVISED THE CTLR THAT I WAS NOT ACQUIRING THE GS. I THEN HEARD ANOTHER PLT TELLING THE CTLR THE SAME THING. I DID NOT FEEL UNCOMFORTABLE OR STRESSED; BUT I DID SAY TO THE CTLR THAT I COULD USE ALL THE HELP I COULD GET. AT THAT POINT; OTHER PLT SAID THAT; FROM THE OM; HE DSNDED AT 600 FPM AND BROKE OUT ABOUT 1100 FT OR 1200 FT. THE CTLR THEN SAID; 'THIS CHANNEL IS FOR TFC CTL;' IN EFFORT CHASTISING THE OTHER PLT. IN MY OPINION; UNDER THE CIRCUMSTANCES; THE OTHER PLT CONTRIBUTED SUBSTANTIALLY TO MY SAFETY. AFTER BREAKING INTO VFR AT ABOUT 1250 FT AND LOOKING FOR THE RWY; I WAS TOLD 'LOW ALT ALERT.' I WAS THEN AT ABOUT 1100 FT; WHICH IS BELOW THE 1160 FT MINIMUM FOR IFR. I'M NOT SURE THE CTLR KNEW I WAS OUT OF THE CLOUDS AT THAT MOMENT. I ACKNOWLEDGED AND CLBED TO BTWN 1200-1300 FT TO KEEP HIM HAPPY. THE RWY QUICKLY APPEARED; AND I LANDED.