An mlt crew, taxiing for takeoff at bwi, became disoriented, taxiing through a non movement area.

Attributes
ACN	539759
Time
Date	200202
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : bwi.airport
State Reference	MD
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : commercial pilot : atp pilot : multi engine
Experience	flight time last 90 days : 220 flight time total : 18800 flight time type : 2600
ASRS Report	539759
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	non adherence : clearance non adherence : published procedure other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance Airport
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

From back course ramp given rapid-fire instructions to 'taxi to runway 28 via taxiway a, taxiway P1, taxiway P, taxiway U.' other airline aircraft approached from right on taxiway P and held short of taxiway east, facing the utility building, with open ramps to left and right. I was confused. Looked at airport page and missed fine print note, taxiing through non movement area. Was amiably informed of such by controller. Stopped aircraft at taxiway P1/P intersection to get bearings. First officer helped clarify and find taxiway U. Taxi involves a right/left/right/left. Ramp has no painted taxi lanes. Non movement area is not marked by hash marks. Callback conversation with a bwi operations manager revealed the following information: the area in question has standard taxiway markings along with the standard non movement, yellow single/yellow dashed lines depicting the non movement areas from one terminal to another terminal.

Original NASA ASRS Text

Title: AN MLT CREW, TAXIING FOR TKOF AT BWI, BECAME DISORIENTED, TAXIING THROUGH A NON MOVEMENT AREA.

Narrative: FROM BACK COURSE RAMP GIVEN RAPID-FIRE INSTRUCTIONS TO 'TAXI TO RWY 28 VIA TXWY A, TXWY P1, TXWY P, TXWY U.' OTHER AIRLINE ACFT APCHED FROM R ON TXWY P AND HELD SHORT OF TXWY E, FACING THE UTILITY BUILDING, WITH OPEN RAMPS TO L AND R. I WAS CONFUSED. LOOKED AT ARPT PAGE AND MISSED FINE PRINT NOTE, TAXIING THROUGH NON MOVEMENT AREA. WAS AMIABLY INFORMED OF SUCH BY CTLR. STOPPED ACFT AT TXWY P1/P INTXN TO GET BEARINGS. FO HELPED CLARIFY AND FIND TXWY U. TAXI INVOLVES A R/L/R/L. RAMP HAS NO PAINTED TAXI LANES. NON MOVEMENT AREA IS NOT MARKED BY HASH MARKS. CALLBACK CONVERSATION WITH A BWI OPS MGR REVEALED THE FOLLOWING INFO: THE AREA IN QUESTION HAS STANDARD TXWY MARKINGS ALONG WITH THE STANDARD NON MOVEMENT, YELLOW SINGLE/YELLOW DASHED LINES DEPICTING THE NON MOVEMENT AREAS FROM ONE TERMINAL TO ANOTHER TERMINAL.

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.