Air carrier medium large transport taxiway excursion taxiing out at cle on snow storm.

Attributes
ACN	199670
Time
Date	199201
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : cle
State Reference	OH
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	IMC
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 : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 8800 flight time type : 280
ASRS Report	199670
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 7000 flight time type : 300
ASRS Report	199462
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Primary Problem	Chart Or Publication
Air Traffic Incident	Pilot Deviation

Narrative:

I was the captain of flight departing cleveland, oh, on 1/92. The WX conditions were bad; snowing, night and taxiways were snow covered. Ramps 6-8 inches of new snow. After push back the aircraft was deiced and subsequently taxied toward takeoff. Due to incorrect commercial chart depiction on cle 10-9, we taxied off the ramp and had to be pulled out. The commercial chart was current (11-15-91), but the depicted ramp area as noted on attachment #2 was incorrect. The 'white' area between company gate 4 and the hangar area to the east is actually paved, but not shown so. Existing WX conditions had covered some taxiway lights and taxiway signs. This coupled with night and snow falling with visibility down to 1/8 at one point made this a difficult situation to resolve.

Original NASA ASRS Text

Title: ACR MLG TAXIWAY EXCURSION TAXIING OUT AT CLE ON SNOW STORM.

Narrative: I WAS THE CAPT OF FLT DEPARTING CLEVELAND, OH, ON 1/92. THE WX CONDITIONS WERE BAD; SNOWING, NIGHT AND TAXIWAYS WERE SNOW COVERED. RAMPS 6-8 INCHES OF NEW SNOW. AFTER PUSH BACK THE ACFT WAS DEICED AND SUBSEQUENTLY TAXIED TOWARD TKOF. DUE TO INCORRECT COMMERCIAL CHART DEPICTION ON CLE 10-9, WE TAXIED OFF THE RAMP AND HAD TO BE PULLED OUT. THE COMMERCIAL CHART WAS CURRENT (11-15-91), BUT THE DEPICTED RAMP AREA AS NOTED ON ATTACHMENT #2 WAS INCORRECT. THE 'WHITE' AREA BTWN COMPANY GATE 4 AND THE HANGAR AREA TO THE E IS ACTUALLY PAVED, BUT NOT SHOWN SO. EXISTING WX CONDITIONS HAD COVERED SOME TAXIWAY LIGHTS AND TAXIWAY SIGNS. THIS COUPLED WITH NIGHT AND SNOW FALLING WITH VISIBILITY DOWN TO 1/8 AT ONE POINT MADE THIS A DIFFICULT SITUATION TO RESOLVE.

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.