Narrative:

Flight was a cross country flight from 2w6 airport in southern maryland to msv airport in southeast new york state. Route of flight was planned to pass through the east side of the washington ADIZ. An ADIZ flight plan was filed with leesburg FSS. On departure from 2w6 (outside ADIZ), pilot contacted patuxent approach for advisories and flight following. A request was made with patuxent approach to obtain my IFR squawk from potomac approach. Controller responded with 'I'll see what I can do.' moments later, the controller gave me a squawk code and the standard 'radar contact.' as I proceeded north toward the ADIZ, I expected a handoff to potomac approach. As I reached the ADIZ boundary, I queried patuxent approach, requesting a handoff. I was told 'unable to obtain a handoff, radar services terminated, squawk 1200, frequency change approved.' I switched squawk and immediately contacted potomac approach on 124.55. The controller responded to my call with my call sign and 'stand by.' my error was assuming that once contact had been established and a flight plan was on file, I could continue to proceed north on the ADIZ boundary. When the controller finally responded, I was informed I was inside the ADIZ without authority/authorized. Also, I was confused and thought the original squawk given by patuxent approach was my ADIZ squawk.

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Original NASA ASRS Text

Title: PLT OF BL8 ENTERS DC ADIZ AFTER RADAR SERVICE IS TERMINATED FROM NHK APCH CTLR.

Narrative: FLT WAS A XCOUNTRY FLT FROM 2W6 ARPT IN SOUTHERN MARYLAND TO MSV ARPT IN SE NEW YORK STATE. RTE OF FLT WAS PLANNED TO PASS THROUGH THE E SIDE OF THE WASHINGTON ADIZ. AN ADIZ FLT PLAN WAS FILED WITH LEESBURG FSS. ON DEP FROM 2W6 (OUTSIDE ADIZ), PLT CONTACTED PATUXENT APCH FOR ADVISORIES AND FLT FOLLOWING. A REQUEST WAS MADE WITH PATUXENT APCH TO OBTAIN MY IFR SQUAWK FROM POTOMAC APCH. CTLR RESPONDED WITH 'I'LL SEE WHAT I CAN DO.' MOMENTS LATER, THE CTLR GAVE ME A SQUAWK CODE AND THE STANDARD 'RADAR CONTACT.' AS I PROCEEDED N TOWARD THE ADIZ, I EXPECTED A HDOF TO POTOMAC APCH. AS I REACHED THE ADIZ BOUNDARY, I QUERIED PATUXENT APCH, REQUESTING A HDOF. I WAS TOLD 'UNABLE TO OBTAIN A HDOF, RADAR SVCS TERMINATED, SQUAWK 1200, FREQ CHANGE APPROVED.' I SWITCHED SQUAWK AND IMMEDIATELY CONTACTED POTOMAC APCH ON 124.55. THE CTLR RESPONDED TO MY CALL WITH MY CALL SIGN AND 'STAND BY.' MY ERROR WAS ASSUMING THAT ONCE CONTACT HAD BEEN ESTABLISHED AND A FLT PLAN WAS ON FILE, I COULD CONTINUE TO PROCEED N ON THE ADIZ BOUNDARY. WHEN THE CTLR FINALLY RESPONDED, I WAS INFORMED I WAS INSIDE THE ADIZ WITHOUT AUTH. ALSO, I WAS CONFUSED AND THOUGHT THE ORIGINAL SQUAWK GIVEN BY PATUXENT APCH WAS MY ADIZ SQUAWK.

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.