Air carrier pilot indicates inadequate taxiway signage at ont.

Attributes
ACN	179978
Time
Date	199106
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ont
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	ground other : taxi
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 11000
ASRS Report	179978
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Airport
Air Traffic Incident	other
Situations
Airport	other physical facility procedure or policy : unspecified

Narrative:

The txwys in ont are not marked. Check taxiway 54 north of runways. The airport uses about 5 vertical signs for taxiway markings; however, many txwys are completely unmarked. The controllers' book doesn't look like the commercial chart.

Original NASA ASRS Text

Title: ACR PLT INDICATES INADEQUATE TXWY SIGNAGE AT ONT.

Narrative: THE TXWYS IN ONT ARE NOT MARKED. CHK TXWY 54 N OF RWYS. THE ARPT USES ABOUT 5 VERT SIGNS FOR TXWY MARKINGS; HOWEVER, MANY TXWYS ARE COMPLETELY UNMARKED. THE CTLRS' BOOK DOESN'T LOOK LIKE THE COMMERCIAL CHART.

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.