PA28 landing W50 met by united states officers regarding possible ADIZ entry.

Attributes
ACN	587413
Time
Date	200307
Day	Sun
Local Time Of Day	1201 To 1800
Place
Altitude	msl single value : 2000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : pct.tracon
Operator	general aviation : personal
Make Model Name	PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	cruise : level descent : approach
Route In Use	enroute other
Flight Plan	VFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 3 flight time total : 475 flight time type : 200
ASRS Report	587413
Person 2
Affiliation	government : faa
Function	controller : approach
Events
Anomaly	aircraft equipment problem : less severe airspace violation : entry non adherence : published procedure non adherence : far
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Airspace Structure Aircraft Flight Crew Human Performance ATC Human Performance
Primary Problem	Aircraft

Narrative:

Filed a flight plan to reenter the class B (washington ADIZ) at XA45. We flew around to the west, and applied for our transponder code to re-enter the airspace at about XA55. We received the code when we were abeam fdk, and were told 'you are cleared to enter the class B.' I asked if they could read the mode C and confirm my altitude readout. They responded that they could not until I was 5 mi past fdk. I entered the airspace and proceeded directly to davis. After a few mins, I reported 'airport in sight' and potomac approach said 'please reset your transponder, we don't see you.' I was in the pattern at this point and turned it on-off-on, and they said, 'we have you.' I said thank you, and landed. After touchdown, I reset to 1200, and parked. Within 15 mins, a blackhawk landed and 2 officers approached. They said that I made an unauthorized incursion. I explained what happened. They said it was probably a miscom and that nothing would probably come of it. Upon getting home, I called potomac approach, and spoke to a supervisor. I explained it all, and he said that the case was closed.

Original NASA ASRS Text

Title: PA28 LNDG W50 MET BY UNITED STATES OFFICERS REGARDING POSSIBLE ADIZ ENTRY.

Narrative: FILED A FLT PLAN TO REENTER THE CLASS B (WASHINGTON ADIZ) AT XA45. WE FLEW AROUND TO THE W, AND APPLIED FOR OUR XPONDER CODE TO RE-ENTER THE AIRSPACE AT ABOUT XA55. WE RECEIVED THE CODE WHEN WE WERE ABEAM FDK, AND WERE TOLD 'YOU ARE CLRED TO ENTER THE CLASS B.' I ASKED IF THEY COULD READ THE MODE C AND CONFIRM MY ALT READOUT. THEY RESPONDED THAT THEY COULD NOT UNTIL I WAS 5 MI PAST FDK. I ENTERED THE AIRSPACE AND PROCEEDED DIRECTLY TO DAVIS. AFTER A FEW MINS, I RPTED 'ARPT IN SIGHT' AND POTOMAC APCH SAID 'PLEASE RESET YOUR XPONDER, WE DON'T SEE YOU.' I WAS IN THE PATTERN AT THIS POINT AND TURNED IT ON-OFF-ON, AND THEY SAID, 'WE HAVE YOU.' I SAID THANK YOU, AND LANDED. AFTER TOUCHDOWN, I RESET TO 1200, AND PARKED. WITHIN 15 MINS, A BLACKHAWK LANDED AND 2 OFFICERS APCHED. THEY SAID THAT I MADE AN UNAUTH INCURSION. I EXPLAINED WHAT HAPPENED. THEY SAID IT WAS PROBABLY A MISCOM AND THAT NOTHING WOULD PROBABLY COME OF IT. UPON GETTING HOME, I CALLED POTOMAC APCH, AND SPOKE TO A SUPVR. I EXPLAINED IT ALL, AND HE SAID THAT THE CASE WAS CLOSED.

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.