The flight crew is worried that they took with the rollout RVR '0.'

Attributes
ACN	303595
Time
Date	199505
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ord
State Reference	IL
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ord
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : instrument pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 12000 flight time type : 200
ASRS Report	303595
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 240 flight time total : 8284 flight time type : 4150
ASRS Report	303594
Events
Anomaly	other anomaly other other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

At pushback, visibility went from 1 1/2 mi to RVR 600 ft. Taxi out required full attention and takeoff RVR was discussed as needing 600 ft/6 mi. An airliner took off ahead of us with all 3 RVR above 600 (800/800/600 as I recall). We were cleared for takeoff and tower gave RVR 1200 (no mid or rollout). During our takeoff, at about 50 KTS, the next aircraft in line was given a rollout RVR of '0.' I elected to continue takeoff roll rather than abort in low visibility. In retrospect, when given 1200 RVR just prior to takeoff, I should have asked what all 3 RVR's were. I assumed the visibility was getting better. Best not to assume anything.

Original NASA ASRS Text

Title: THE FLC IS WORRIED THAT THEY TOOK WITH THE ROLLOUT RVR '0.'

Narrative: AT PUSHBACK, VISIBILITY WENT FROM 1 1/2 MI TO RVR 600 FT. TAXI OUT REQUIRED FULL ATTN AND TKOF RVR WAS DISCUSSED AS NEEDING 600 FT/6 MI. AN AIRLINER TOOK OFF AHEAD OF US WITH ALL 3 RVR ABOVE 600 (800/800/600 AS I RECALL). WE WERE CLRED FOR TKOF AND TWR GAVE RVR 1200 (NO MID OR ROLLOUT). DURING OUR TKOF, AT ABOUT 50 KTS, THE NEXT ACFT IN LINE WAS GIVEN A ROLLOUT RVR OF '0.' I ELECTED TO CONTINUE TKOF ROLL RATHER THAN ABORT IN LOW VISIBILITY. IN RETROSPECT, WHEN GIVEN 1200 RVR JUST PRIOR TO TKOF, I SHOULD HAVE ASKED WHAT ALL 3 RVR'S WERE. I ASSUMED THE VISIBILITY WAS GETTING BETTER. BEST NOT TO ASSUME ANYTHING.

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.