Narrative:

I departed vkx (potomac airfield) en route to 2w5 (maryland airport). I was given a discrete transponder code by potomac TRACON. My intention was to practice traffic patterns at 2w5. I landed at 2w5, and without thinking, switched my transponder to 1200 as I have done hundreds of times before september tue. I then performed 1 traffic pattern. On the taxiway, the FBO was on the radio asking if anyone squawked 1200. Realizing my mistake, I told the FBO that it was me, and changed my transponder to the code originally given by potomac TRACON. A few mins later, the FBO told me to come in, because potomac TRACON wanted to speak to me. The gentlemen from potomac TRACON asked for my name, address, and pilot certificate number. He told me that I violated the ADIZ, and he would forward the information to the FAA.

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Original NASA ASRS Text

Title: C152 PLT MISTAKENLY SQUAWKED 1200 WHILE SHOOTING TOUCH AND GOES AT 2W5 WITHIN THE DC ADIZ. CONTACTED BY PCT AND INFORMED OF POSSIBLE VIOLATION PROCEEDINGS.

Narrative: I DEPARTED VKX (POTOMAC AIRFIELD) ENRTE TO 2W5 (MARYLAND ARPT). I WAS GIVEN A DISCRETE XPONDER CODE BY POTOMAC TRACON. MY INTENTION WAS TO PRACTICE TFC PATTERNS AT 2W5. I LANDED AT 2W5, AND WITHOUT THINKING, SWITCHED MY XPONDER TO 1200 AS I HAVE DONE HUNDREDS OF TIMES BEFORE SEPTEMBER TUE. I THEN PERFORMED 1 TFC PATTERN. ON THE TXWY, THE FBO WAS ON THE RADIO ASKING IF ANYONE SQUAWKED 1200. REALIZING MY MISTAKE, I TOLD THE FBO THAT IT WAS ME, AND CHANGED MY XPONDER TO THE CODE ORIGINALLY GIVEN BY POTOMAC TRACON. A FEW MINS LATER, THE FBO TOLD ME TO COME IN, BECAUSE POTOMAC TRACON WANTED TO SPEAK TO ME. THE GENTLEMEN FROM POTOMAC TRACON ASKED FOR MY NAME, ADDRESS, AND PLT CERTIFICATE NUMBER. HE TOLD ME THAT I VIOLATED THE ADIZ, AND HE WOULD FORWARD THE INFO TO THE FAA.

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.