Narrative:

On 03/sun/03, I departed fwn at XA15 local time for blm via sbj. This flight plan avoids the ny class B airspace, but is almost entirely within the mode C veil. The plane was equipped with an altitude encoding transponder, and was set to 1200 for the entire flight. At approximately XB00 local time, I was just about to enter the pattern on a 45 for a left downwind on runway 32, when a small business jet came up on my left. At the time, I was irritated that the jet was coming so close to me. I assumed that they were also landing at blm. In order to stay out of their way, I turned to the right, and started a 360 degree turn. As I turned they stayed with me. Now I thought that they were turning south, but continued my turn. Eventually, they went into a wider turn, so I finished my turn and entered the pattern. At that time they came on the CTAF frequency for blm and identified themselves as homeland security. They told me that I had made an ADIZ violation, and that they would need to talk to me after I landed. On the ground, they took down information on my pilots certificate, medical certificate. They also looked over the paperwork for the plane. Although it wasn't a pleasant experience, they were professional, friendly and courteous. They pulled out a sectional and explained to me that the class B airspace, including the mode C veil, was now an ADIZ. I incorrectly thought that the ADIZ did not include the mode C veil. They also explained the steps I would have to take before I could leave blm. On the ground, I could read the words 'united states customs service' on the jet, but they were too small to read from the air. They told me that they held up a sign telling me to land, but I didn't see it in the air.

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Original NASA ASRS Text

Title: C172 PLT WAS INTERCEPTED BY A CUSTOMS JET FOR PENETRATION OF NY ADIZ.

Narrative: ON 03/SUN/03, I DEPARTED FWN AT XA15 LCL TIME FOR BLM VIA SBJ. THIS FLT PLAN AVOIDS THE NY CLASS B AIRSPACE, BUT IS ALMOST ENTIRELY WITHIN THE MODE C VEIL. THE PLANE WAS EQUIPPED WITH AN ALT ENCODING XPONDER, AND WAS SET TO 1200 FOR THE ENTIRE FLT. AT APPROX XB00 LCL TIME, I WAS JUST ABOUT TO ENTER THE PATTERN ON A 45 FOR A LEFT DOWNWIND ON RWY 32, WHEN A SMALL BUSINESS JET CAME UP ON MY L. AT THE TIME, I WAS IRRITATED THAT THE JET WAS COMING SO CLOSE TO ME. I ASSUMED THAT THEY WERE ALSO LNDG AT BLM. IN ORDER TO STAY OUT OF THEIR WAY, I TURNED TO THE R, AND STARTED A 360 DEG TURN. AS I TURNED THEY STAYED WITH ME. NOW I THOUGHT THAT THEY WERE TURNING S, BUT CONTINUED MY TURN. EVENTUALLY, THEY WENT INTO A WIDER TURN, SO I FINISHED MY TURN AND ENTERED THE PATTERN. AT THAT TIME THEY CAME ON THE CTAF FREQUENCY FOR BLM AND IDENTIFIED THEMSELVES AS HOMELAND SECURITY. THEY TOLD ME THAT I HAD MADE AN ADIZ VIOLATION, AND THAT THEY WOULD NEED TO TALK TO ME AFTER I LANDED. ON THE GND, THEY TOOK DOWN INFO ON MY PLTS CERTIFICATE, MEDICAL CERTIFICATE. THEY ALSO LOOKED OVER THE PAPERWORK FOR THE PLANE. ALTHOUGH IT WASN'T A PLEASANT EXPERIENCE, THEY WERE PROFESSIONAL, FRIENDLY AND COURTEOUS. THEY PULLED OUT A SECTIONAL AND EXPLAINED TO ME THAT THE CLASS B AIRSPACE, INCLUDING THE MODE C VEIL, WAS NOW AN ADIZ. I INCORRECTLY THOUGHT THAT THE ADIZ DID NOT INCLUDE THE MODE C VEIL. THEY ALSO EXPLAINED THE STEPS I WOULD HAVE TO TAKE BEFORE I COULD LEAVE BLM. ON THE GND, I COULD READ THE WORDS 'UNITED STATES CUSTOMS SERVICE' ON THE JET, BUT THEY WERE TOO SMALL TO READ FROM THE AIR. THEY TOLD ME THAT THEY HELD UP A SIGN TELLING ME TO LAND, BUT I DIDN'T SEE IT IN THE AIR.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.