Narrative:

I was returning VFR from mfv to 3b9 via acy and CCC. I was flying north along the new jersey coast at 6500 ft and navigating with a GPS. Fifty miles south of jfk, I changed course to fly direct to the CCC VOR. The GPS red course line showed me clearing the jfk class B airspace by a good margin. I mistakenly thought the GPS displayed the mode C veil around ny and that I was well clear of the tfr around ny. Past CCC and over long island, I was intercepted by a government agency aircraft and told to divert. Only then, did I realize that I had done something wrong. The homeland security pilot was also using a GPS and explained how it did not display the mode C veil. Since the GPS displayed only the class B airspace, I cleared the class B, but pierced the tfr while en route to CCC. It was my error. Never assume. In the future, I will know my exact location with greater precision and care. I attend FAA safety seminars and participate in the FAA wings program. I try to be a conscientious and safe pilot. The error was mine and I learned a valuable lesson.

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Original NASA ASRS Text

Title: BE36 PLT INTERCEPTED BY GOV AGENCY AND FORCED TO LAND WHERE ADVISED OF NY ADIZ VIOLATION. PLT USED GPS FOR AIRSPACE PROTECTION THAT DID NOT IDENTIFY MODE C VEIL/ADIZ.

Narrative: I WAS RETURNING VFR FROM MFV TO 3B9 VIA ACY AND CCC. I WAS FLYING N ALONG THE NEW JERSEY COAST AT 6500 FT AND NAVIGATING WITH A GPS. FIFTY MILES S OF JFK, I CHANGED COURSE TO FLY DIRECT TO THE CCC VOR. THE GPS RED COURSE LINE SHOWED ME CLRING THE JFK CLASS B AIRSPACE BY A GOOD MARGIN. I MISTAKENLY THOUGHT THE GPS DISPLAYED THE MODE C VEIL AROUND NY AND THAT I WAS WELL CLR OF THE TFR AROUND NY. PAST CCC AND OVER LONG ISLAND, I WAS INTERCEPTED BY A GOV AGENCY ACFT AND TOLD TO DIVERT. ONLY THEN, DID I REALIZE THAT I HAD DONE SOMETHING WRONG. THE HOMELAND SECURITY PLT WAS ALSO USING A GPS AND EXPLAINED HOW IT DID NOT DISPLAY THE MODE C VEIL. SINCE THE GPS DISPLAYED ONLY THE CLASS B AIRSPACE, I CLRED THE CLASS B, BUT PIERCED THE TFR WHILE ENRTE TO CCC. IT WAS MY ERROR. NEVER ASSUME. IN THE FUTURE, I WILL KNOW MY EXACT LOCATION WITH GREATER PRECISION AND CARE. I ATTEND FAA SAFETY SEMINARS AND PARTICIPATE IN THE FAA WINGS PROGRAM. I TRY TO BE A CONSCIENTIOUS AND SAFE PLT. THE ERROR WAS MINE AND I LEARNED A VALUABLE LESSON.

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.