Narrative:

We were on the benky 1 RNAV arrival into ord. While over dacks intersection; someone from the ground approximately 5 to 10 miles in front of us shined a laser beam or bright light directly into the cockpit for approximately 3 seconds. We were at 10;000 ft at 250 KIAS. The captain was heads down recording the ATIS and calculating the landing data while I was flying; so he did not see it. It was a bright green light and it was obviously intentionally aimed directly at us. It was slightly blinding. I immediately told the captain about it; but by the time he looked up; the light/laser had been turned off. We reported it to ATC and landed on runway 10 without incident.

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Original NASA ASRS Text

Title: An Air Carrier First Officer reported a three second green laser hit at 10;000 FT over DACKS intersection on the ORD BENKY1 RNAV ARRIVAL.

Narrative: We were on the BENKY 1 RNAV ARRIVAL into ORD. While over DACKS intersection; someone from the ground approximately 5 to 10 miles in front of us shined a laser beam or bright light directly into the cockpit for approximately 3 seconds. We were at 10;000 FT at 250 KIAS. The Captain was heads down recording the ATIS and calculating the landing data while I was flying; so he did not see it. It was a bright green light and it was obviously intentionally aimed directly at us. It was slightly blinding. I immediately told the Captain about it; but by the time he looked up; the light/laser had been turned off. We reported it to ATC and landed on Runway 10 without incident.

Data retrieved from NASA's ASRS site as of April 2012 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.