Concern that an unauthorized entry into bwi class B airspace may have occurred because of poor visibility, lack of landmarks and no DME definition of the boundary.

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Attributes
ACN	510290
Time
Date	200105
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : bwi.vortac
State Reference	MD
Altitude	msl single value : 2000
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise : level
Flight Plan	VFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : commercial pilot : instrument pilot : cfi
Experience	flight time last 90 days : 2 flight time total : 790 flight time type : 2
ASRS Report	510290
Events
Anomaly	airspace violation : entry non adherence : far
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Flight Crew Human Performance Airspace Structure
Primary Problem	Flight Crew Human Performance
Situations
Airspace Structure	class b : bwi.b

Narrative:

First flight in area, in poor (approximately 5 SM) visibility. Possible incursion of bwi class B airspace. Difficult to be sure because straight line southwest boundary does not match any obvious landmarks, and straight boundary obviates use of DME.

Original NASA ASRS Text

Title: CONCERN THAT AN UNAUTH ENTRY INTO BWI CLASS B AIRSPACE MAY HAVE OCCURRED BECAUSE OF POOR VISIBILITY, LACK OF LANDMARKS AND NO DME DEFINITION OF THE BOUNDARY.

Narrative: FIRST FLT IN AREA, IN POOR (APPROX 5 SM) VISIBILITY. POSSIBLE INCURSION OF BWI CLASS B AIRSPACE. DIFFICULT TO BE SURE BECAUSE STRAIGHT LINE SW BOUNDARY DOES NOT MATCH ANY OBVIOUS LANDMARKS, AND STRAIGHT BOUNDARY OBVIATES USE OF DME.

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.