GA7 pilot entered iad class B airspace without clearance.

Attributes
ACN	472940
Time
Date	200005
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : emi.vortac
State Reference	MD
Altitude	msl bound lower : 4000 msl bound upper : 4500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : phl.tracon tracon : bwi.tracon
Operator	general aviation : personal
Make Model Name	Cougar AA7
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Experience	flight time last 90 days : 30 flight time total : 850 flight time type : 360
ASRS Report	472940
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	airspace violation : entry non adherence : far non adherence : published procedure other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued alert flight crew : exited penetrated airspace
Consequence	faa : investigated
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

At the time of the situation, I was en route from cdw to gai under VFR in good VMC. I was receiving advisories. Believing myself to have been cleared into the washington class B airspace, I entered that airspace at 4500 ft MSL. I attempted to communicate with ATC prior to initiating a descent. I thereupon found myself unable to communicate on the current frequency. I initiated a descent, turned north to leave the class B airspace and searched for a new frequency. Upon contacting baltimore approach, I was told that I was being tracked on radar but that the controller did not understand why I was squawking the assigned code. In the future, I shall be certain prior to entering class B airspace that communication has not been lost.

Original NASA ASRS Text

Title: GA7 PLT ENTERED IAD CLASS B AIRSPACE WITHOUT CLRNC.

Narrative: AT THE TIME OF THE SIT, I WAS ENRTE FROM CDW TO GAI UNDER VFR IN GOOD VMC. I WAS RECEIVING ADVISORIES. BELIEVING MYSELF TO HAVE BEEN CLRED INTO THE WASHINGTON CLASS B AIRSPACE, I ENTERED THAT AIRSPACE AT 4500 FT MSL. I ATTEMPTED TO COMMUNICATE WITH ATC PRIOR TO INITIATING A DSCNT. I THEREUPON FOUND MYSELF UNABLE TO COMMUNICATE ON THE CURRENT FREQ. I INITIATED A DSCNT, TURNED N TO LEAVE THE CLASS B AIRSPACE AND SEARCHED FOR A NEW FREQ. UPON CONTACTING BALTIMORE APCH, I WAS TOLD THAT I WAS BEING TRACKED ON RADAR BUT THAT THE CTLR DID NOT UNDERSTAND WHY I WAS SQUAWKING THE ASSIGNED CODE. IN THE FUTURE, I SHALL BE CERTAIN PRIOR TO ENTERING CLASS B AIRSPACE THAT COM HAS NOT BEEN LOST.

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.