Narrative:

Pilot deviation; unintentional. I switched my transponder to 'VFR' from my 'IFR' code after canceling my IFR flight plan with mtn tower; which is inside the dc ADIZ.

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Original NASA ASRS Text

Title: C182 PLT SWITCHES XPONDER CODE WHILE IN DC ADIZ AGAINST PUBLISHED PROCS.

Narrative: PLTDEV; UNINTENTIONAL. I SWITCHED MY XPONDER TO 'VFR' FROM MY 'IFR' CODE AFTER CANCELING MY IFR FLT PLAN WITH MTN TWR; WHICH IS INSIDE THE DC ADIZ.

Data retrieved from NASA's ASRS site as of January 2009 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.