Air carrier widebody transport unauthorized taxi at altitude. Entered a closed taxiway.

Attributes
ACN	191522
Time
Date	199110
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : atl
State Reference	GA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Navigation In Use	Other
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 16000 flight time type : 1000
ASRS Report	191522
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	incursion : runway non adherence : clearance
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were cleared to taxi on the runway (27L) and turn off on taxiway C. We started to turn off on the reverse high speed and requested clarification because there were no runway/taxiway markings and were told to turn at the next taxiway, taxiway C, and to use caution for ground vehicles. There were 5 or 6 milling about. We turned at the next taxiway and told we had turned onto taxiway D which was closed. I don't know if there was visible signage as I was watching the vehicles and just turned at the next taxiway. The taxiway D was not marked closed.

Original NASA ASRS Text

Title: ACR WDB UNAUTHORIZED TAXI AT ALT. ENTERED A CLOSED TAXIWAY.

Narrative: WE WERE CLRED TO TAXI ON THE RWY (27L) AND TURN OFF ON TAXIWAY C. WE STARTED TO TURN OFF ON THE REVERSE HIGH SPD AND REQUESTED CLARIFICATION BECAUSE THERE WERE NO RWY/TAXIWAY MARKINGS AND WERE TOLD TO TURN AT THE NEXT TAXIWAY, TAXIWAY C, AND TO USE CAUTION FOR GND VEHICLES. THERE WERE 5 OR 6 MILLING ABOUT. WE TURNED AT THE NEXT TAXIWAY AND TOLD WE HAD TURNED ONTO TAXIWAY D WHICH WAS CLOSED. I DON'T KNOW IF THERE WAS VISIBLE SIGNAGE AS I WAS WATCHING THE VEHICLES AND JUST TURNED AT THE NEXT TAXIWAY. THE TAXIWAY D WAS NOT MARKED 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.