Narrative:

During preflight, ATIS visibility was 2 miles with haze. After pushback, tower called the visibility for runway 26R at 800, 700, 600. I looked at the ont airport page and mistakenly thought the runway 8R category C and D block was for runway 26R. Therefore, I thought we needed 6,6,6, RVR and that we were legal for takeoff on runway 26R. Then, the captain confirmed that we were legal, we contacted dispatch and obtained a takeoff alternate. Next, even though we thought we were legal for takeoff even though I would be performing the takeoff, we ran the takeoff checklist so the captain could use the HUD to back me up. About the time we were finishing the checklist, tower called runway 26R at 1200, 700, 2600. We then departed ontario. However, during the climb out, while discussing takeoff minimums in different scenarios we re-examined the ontario page and caught our error. I believe that not having had to check RVR for takeoff since last fall contributed to my error. Also, the layout on the airport page at ontario was somewhat confusing. These two factors led to my error. During the entire scenario, I never felt like I was being rushed. In summary, I believe my error was due to not having examined an airport page for required RVR for a long time. I think I can prevent a recurrence by reviewing the applicable section of the flight manual.

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Original NASA ASRS Text

Title: USING MINIMUM VISIBILITY REQUIREMENT DATA FOR THE INCORRECT RWY AT ONT RESULTS IN A TKOF BELOW MINIMUM VISIBILITY REQUIREMENT.

Narrative: DURING PREFLT, ATIS VISIBILITY WAS 2 MILES WITH HAZE. AFTER PUSHBACK, TWR CALLED THE VISIBILITY FOR RWY 26R AT 800, 700, 600. I LOOKED AT THE ONT ARPT PAGE AND MISTAKENLY THOUGHT THE RWY 8R CATEGORY C AND D BLOCK WAS FOR RWY 26R. THEREFORE, I THOUGHT WE NEEDED 6,6,6, RVR AND THAT WE WERE LEGAL FOR TKOF ON RWY 26R. THEN, THE CAPT CONFIRMED THAT WE WERE LEGAL, WE CONTACTED DISPATCH AND OBTAINED A TKOF ALTERNATE. NEXT, EVEN THOUGH WE THOUGHT WE WERE LEGAL FOR TKOF EVEN THOUGH I WOULD BE PERFORMING THE TAKEOFF, WE RAN THE TAKEOFF CHKLIST SO THE CAPT COULD USE THE HUD TO BACK ME UP. ABOUT THE TIME WE WERE FINISHING THE CHKLIST, TWR CALLED RWY 26R AT 1200, 700, 2600. WE THEN DEPARTED ONTARIO. HOWEVER, DURING THE CLBOUT, WHILE DISCUSSING TKOF MINIMUMS IN DIFFERENT SCENARIOS WE RE-EXAMINED THE ONTARIO PAGE AND CAUGHT OUR ERROR. I BELIEVE THAT NOT HAVING HAD TO CHK RVR FOR TAKEOFF SINCE LAST FALL CONTRIBUTED TO MY ERROR. ALSO, THE LAYOUT ON THE ARPT PAGE AT ONTARIO WAS SOMEWHAT CONFUSING. THESE TWO FACTORS LED TO MY ERROR. DURING THE ENTIRE SCENARIO, I NEVER FELT LIKE I WAS BEING RUSHED. IN SUMMARY, I BELIEVE MY ERROR WAS DUE TO NOT HAVING EXAMINED AN ARPT PAGE FOR REQUIRED RVR FOR A LONG TIME. I THINK I CAN PREVENT A RECURRENCE BY REVIEWING THE APPLICABLE SECTION OF THE FLT MANUAL.

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.