Narrative:

This unauthorized entry into the ADIZ occurred as I was taking off from jyo following my previous unauthorized entry into the ADIZ earlier that morning; having been escorted to jyo by a homeland defense chopper. Since I had had problems with my VOR; which led to the earlier incursion; I went up with a local instructor who verified that the VOR was not working. She also briefed me on departure procedures; advising that I would need both a frequency and transponder code prior to departure. When it was time for me to depart jyo; I went to the jyo FSS; got a WX briefing and NOTAMS; and filed a flight plan. The briefer said I would have to call potomac by phone rather than radio to get the needed frequency and transponder code. So I called potomac TRACON by phone to get my radio frequency and transponder code. On the ground I set the transponder incorrectly to 'XXXX.' whereas it should have been 'XXXY.' I was supposed to set the radio frequency to 112.05; but it ended up as 122.05; which escaped my notice. I was also supposed to make contact with potomac before taking off; which I was unaware of since the instructor and I had not done so as we had simply remained in the leesburg pattern to test the VOR. My understanding was that I needed to radio potomac when I was airborne. So I took off from jyo on runway 17 and left the pattern on a heading of 025 degrees to fdk. While still climbing; I immediately attempted to contact potomac on 122.05; but got no answer. I checked the frequencys I had written down; and noticed that both the transponder and radio were incorrect. I quickly corrected the transponder to 'XXXY' and tried to dial in 112.05; but the radio would not go to '112;' it would only give '122.' still climbing; I then tried to contact leesburg on 122.6; which was the frequency I was given to contact them to open my flight plan after leaving the ADIZ. Still no answer. Concerned that my radio was not functioning; I tuned to 121.5 and tried transmitting 'pan-pan; cessna X has radio problems.' a local pilot offered assistance; but then jyo came on and assured my radio was working. It was at this time that I noticed I was too high; and had possibly intruded into iad class B airspace; and started to descend; but noticed that I had already left the ADIZ and iad airspace. At that point I opened my flight plan with leesburg. After reaching fdk and turning ene; I contacted bwi for flight following. Bwi advised that I contact potomac ADIZ; which I did and entered my transponder code. The rest of the flight was uneventful. I did not make myself aware of the proper procedure for departing into the ADIZ; otherwise I would have corrected the radio; and probably the mis-set transponder code after talking to potomac. That being said; once airborne; I allowed myself to get distraction by being unable to set the radio to the correct frequency to contact potomac so that I did not arrest my climb to avoid overlying iad controled airspace. To prevent a future recurrence; I will thoroughly review ADIZ departure procedures; doublechk radio and transponder settings; and be more vigilant on maintaining the proper altitude when departing an airport near controled airspace.

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Original NASA ASRS Text

Title: A C172 PLT DID NOT FOLLOW THE CORRECT PROCS EXITING THE DCA ADIZ.

Narrative: THIS UNAUTH ENTRY INTO THE ADIZ OCCURRED AS I WAS TAKING OFF FROM JYO FOLLOWING MY PREVIOUS UNAUTH ENTRY INTO THE ADIZ EARLIER THAT MORNING; HAVING BEEN ESCORTED TO JYO BY A HOMELAND DEFENSE CHOPPER. SINCE I HAD HAD PROBS WITH MY VOR; WHICH LED TO THE EARLIER INCURSION; I WENT UP WITH A LCL INSTRUCTOR WHO VERIFIED THAT THE VOR WAS NOT WORKING. SHE ALSO BRIEFED ME ON DEP PROCS; ADVISING THAT I WOULD NEED BOTH A FREQ AND XPONDER CODE PRIOR TO DEP. WHEN IT WAS TIME FOR ME TO DEPART JYO; I WENT TO THE JYO FSS; GOT A WX BRIEFING AND NOTAMS; AND FILED A FLT PLAN. THE BRIEFER SAID I WOULD HAVE TO CALL POTOMAC BY PHONE RATHER THAN RADIO TO GET THE NEEDED FREQ AND XPONDER CODE. SO I CALLED POTOMAC TRACON BY PHONE TO GET MY RADIO FREQ AND XPONDER CODE. ON THE GND I SET THE XPONDER INCORRECTLY TO 'XXXX.' WHEREAS IT SHOULD HAVE BEEN 'XXXY.' I WAS SUPPOSED TO SET THE RADIO FREQ TO 112.05; BUT IT ENDED UP AS 122.05; WHICH ESCAPED MY NOTICE. I WAS ALSO SUPPOSED TO MAKE CONTACT WITH POTOMAC BEFORE TAKING OFF; WHICH I WAS UNAWARE OF SINCE THE INSTRUCTOR AND I HAD NOT DONE SO AS WE HAD SIMPLY REMAINED IN THE LEESBURG PATTERN TO TEST THE VOR. MY UNDERSTANDING WAS THAT I NEEDED TO RADIO POTOMAC WHEN I WAS AIRBORNE. SO I TOOK OFF FROM JYO ON RWY 17 AND LEFT THE PATTERN ON A HDG OF 025 DEGS TO FDK. WHILE STILL CLBING; I IMMEDIATELY ATTEMPTED TO CONTACT POTOMAC ON 122.05; BUT GOT NO ANSWER. I CHKED THE FREQS I HAD WRITTEN DOWN; AND NOTICED THAT BOTH THE XPONDER AND RADIO WERE INCORRECT. I QUICKLY CORRECTED THE XPONDER TO 'XXXY' AND TRIED TO DIAL IN 112.05; BUT THE RADIO WOULD NOT GO TO '112;' IT WOULD ONLY GIVE '122.' STILL CLBING; I THEN TRIED TO CONTACT LEESBURG ON 122.6; WHICH WAS THE FREQ I WAS GIVEN TO CONTACT THEM TO OPEN MY FLT PLAN AFTER LEAVING THE ADIZ. STILL NO ANSWER. CONCERNED THAT MY RADIO WAS NOT FUNCTIONING; I TUNED TO 121.5 AND TRIED XMITTING 'PAN-PAN; CESSNA X HAS RADIO PROBS.' A LCL PLT OFFERED ASSISTANCE; BUT THEN JYO CAME ON AND ASSURED MY RADIO WAS WORKING. IT WAS AT THIS TIME THAT I NOTICED I WAS TOO HIGH; AND HAD POSSIBLY INTRUDED INTO IAD CLASS B AIRSPACE; AND STARTED TO DSND; BUT NOTICED THAT I HAD ALREADY LEFT THE ADIZ AND IAD AIRSPACE. AT THAT POINT I OPENED MY FLT PLAN WITH LEESBURG. AFTER REACHING FDK AND TURNING ENE; I CONTACTED BWI FOR FLT FOLLOWING. BWI ADVISED THAT I CONTACT POTOMAC ADIZ; WHICH I DID AND ENTERED MY XPONDER CODE. THE REST OF THE FLT WAS UNEVENTFUL. I DID NOT MAKE MYSELF AWARE OF THE PROPER PROC FOR DEPARTING INTO THE ADIZ; OTHERWISE I WOULD HAVE CORRECTED THE RADIO; AND PROBABLY THE MIS-SET XPONDER CODE AFTER TALKING TO POTOMAC. THAT BEING SAID; ONCE AIRBORNE; I ALLOWED MYSELF TO GET DISTR BY BEING UNABLE TO SET THE RADIO TO THE CORRECT FREQ TO CONTACT POTOMAC SO THAT I DID NOT ARREST MY CLB TO AVOID OVERLYING IAD CTLED AIRSPACE. TO PREVENT A FUTURE RECURRENCE; I WILL THOROUGHLY REVIEW ADIZ DEP PROCS; DOUBLECHK RADIO AND XPONDER SETTINGS; AND BE MORE VIGILANT ON MAINTAINING THE PROPER ALT WHEN DEPARTING AN ARPT NEAR CTLED AIRSPACE.

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.