ROTARY WINGED TFC MAKES AN UNAUTHORIZED PENETRATION OF AIRSPACE IN PROX OF ATA.

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ON OCT/SUN/91 I WAS ON A VFR XCOUNTRY FLT FROM MILLVILLE TO N81 TO N44. I PLANNED TO USE VOR AND IT WAS MY FIRST FLT USING INSTS; I PLANNED TO USE COYLE VOR FOR COURSE GUIDANCE AND I HAD CONFUSED THE COYLE VOR FREQ OF 113.4 WITH MCGUIRE FREQ OF 110.6 AROUND THE AREA OF CHATSWORTH. I COULDN'T IDENT THE MORSE CODE CORRECTLY AND IN THIS MOMENT I THOUGHT THAT I WAS IN A CORRECT WAY; AFTER 5 MINS OR LESS I CHANGED MY HDG TO THE E BECAUSE I KNEW THAT SOMETHING WRONG HAD HAPPENED. I SAW 1 ARPT AND I THOUGHT THAT WAS N44 AND I SPOKE WITH THEM ABOUT MY SITUATION AND INTENTIONS; 10 MI OUT; 5 MI; AND 1 MI OUT. I REQUESTED FOR RWY IN USE AND THEY ANSWERED ME RWY 06. IT'S A BIG COINCIDENCE BECAUSE THE 2 ARPTS HAVE THE SAME NUMBERS IN THE RWYS AND THEY ARE VERY CLOSE. I HEARD ON THE RADIO THAT SOME HELI WAS DOING PATTERNS AND I SAW THE ACFT BUT WHEN I WAS OVER THE FIELD I SAW 2 RWYS AND ENTRENCH ARPT WITHOUT PEOPLE AND AIRPLANES AND 2 BIG HANGARS. I TRIED TO LAND TO THINK AND LOOK OVER MY CHART AND PAPERS BUT IN THIS MOMENT I WAS VERY CONFUSED AND 2 CARS CAME TOWARD ME AND I HAD A BAD REACTION AND TOOK OFF FOR DEP. NEAR THE ARPT; WHEN I WAS IN DOWNWIND PARALLEL TO RWY 06 WAS 1 MIL HELI FLYING BESIDE ME ON MY L SIDE. I THOUGHT THAT THEY WANTED TO SAY TO ME THAT I WAS IN A MIL ZONE AND I HAD TO GO OUT AND LEAVE THE AREA. I'M VERY WORRIED ABOUT THIS AND SERIOUS I'M SORRY. I HOPE THAT YOU UNDERSTAND MY PROBLEM AND PLEASE THAT IT DOESN'T BECOME BIGGER.