Narrative:

Potomac informed us that radar service was terminated, and to contact tower. While switching frequencys there was confusion whether we were on IFR clearance (we being, myself and IFR instructor). I then squawked VFR (1200). We were never briefed from flight services not to do so inside an ADIZ zone.

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Original NASA ASRS Text

Title: STUDENT PLT AND INSTRUCTOR PLT VIOLATE DC ADIZ WHEN THEY SQUAWK VFR AFTER PCT CTLR ADVISED RADAR SVC TERMINATED.

Narrative: POTOMAC INFORMED US THAT RADAR SVC WAS TERMINATED, AND TO CONTACT TWR. WHILE SWITCHING FREQS THERE WAS CONFUSION WHETHER WE WERE ON IFR CLRNC (WE BEING, MYSELF AND IFR INSTRUCTOR). I THEN SQUAWKED VFR (1200). WE WERE NEVER BRIEFED FROM FLT SVCS NOT TO DO SO INSIDE AN ADIZ ZONE.

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.