Air carrier X taxiway excursion due to poor airport signage at sfo.

Attributes
ACN	198069
Time
Date	199112
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : sfo
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 200 flight time total : 5000
ASRS Report	198069
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : became reoriented
Consequence	Other
Supplementary
Primary Problem	Airport
Air Traffic Incident	Pilot Deviation
Situations
Airport	other physical facility

Narrative:

Departing sfo air carrier X was instructed to taxi to runway 10R on the outer and taxiway X. Approaching runway we followed a sign to the left. Rain and standing water obscured the surface markings and we stopped while trying to establish the proper route to the runway. Ground controller advised us we were off the taxiway entirely. We were on hard surface taxiway sierra. We suggested a left turn and proceeded to our runway.

Original NASA ASRS Text

Title: ACR X TAXIWAY EXCURSION DUE TO POOR ARPT SIGNAGE AT SFO.

Narrative: DEPARTING SFO ACR X WAS INSTRUCTED TO TAXI TO RWY 10R ON THE OUTER AND TAXIWAY X. APCHING RWY WE FOLLOWED A SIGN TO THE L. RAIN AND STANDING WATER OBSCURED THE SURFACE MARKINGS AND WE STOPPED WHILE TRYING TO ESTABLISH THE PROPER RTE TO THE RWY. GND CTLR ADVISED US WE WERE OFF THE TAXIWAY ENTIRELY. WE WERE ON HARD SURFACE TAXIWAY SIERRA. WE SUGGESTED A L TURN AND PROCEEDED TO OUR RWY.

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.