Narrative:

I was unaware that the washington ADIZ was ground conterminous. I was navigating below the floor of the class B airspace as depicted on the area chart and my GPS. I had contacted potomac approach prior to reaching the lateral limits of the washington class B airspace and requested flight following. The controller said he was unable to give VFR advisories. About 20 mins later, I tried another frequency requesting flight following and was instructed to contact potomac on 118.3(?) I was given a vector (180 degrees) to exit the ADIZ and I complied. I was then given a phone number to call when I reached my destination, which I did. I gave them all the information they asked for and was advised to file this form.

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Original NASA ASRS Text

Title: M20E PLT ADVISES HE IS UNAWARE OF DC ADIZ REQUIREMENTS WHEN REQUESTING VFR TA'S AS HE TRANSITS BELOW DCA CLASS B AIRSPACE.

Narrative: I WAS UNAWARE THAT THE WASHINGTON ADIZ WAS GND CONTERMINOUS. I WAS NAVING BELOW THE FLOOR OF THE CLASS B AIRSPACE AS DEPICTED ON THE AREA CHART AND MY GPS. I HAD CONTACTED POTOMAC APCH PRIOR TO REACHING THE LATERAL LIMITS OF THE WASHINGTON CLASS B AIRSPACE AND REQUESTED FLT FOLLOWING. THE CTLR SAID HE WAS UNABLE TO GIVE VFR ADVISORIES. ABOUT 20 MINS LATER, I TRIED ANOTHER FREQ REQUESTING FLT FOLLOWING AND WAS INSTRUCTED TO CONTACT POTOMAC ON 118.3(?) I WAS GIVEN A VECTOR (180 DEGS) TO EXIT THE ADIZ AND I COMPLIED. I WAS THEN GIVEN A PHONE NUMBER TO CALL WHEN I REACHED MY DEST, WHICH I DID. I GAVE THEM ALL THE INFO THEY ASKED FOR AND WAS ADVISED TO FILE THIS FORM.

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.