Narrative:

Approaching cos, vectored over meadow lake airport where glider operations were reported by ATIS. I warned first officer to be alert for gliders due to prior sightings. Approach control was busy with other traffic -- 2 light aircraft in our area (1 landing and 1 crossing approach course runway 17L). I spotted a yellow sailplane at 12 O'clock position, less than 1 mi, and directed a left turn. First officer got a visual and started left turn. We missed him by approximately 1000 ft horizontal and less than 200 ft vertical. Approach had no radar target. I spoke with a supervisor at cos tower and he said this happens frequently. There should be an arrival published that does not overfly this airport.

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Original NASA ASRS Text

Title: APCHING COS, AN ACR FLC ENCOUNTERED A GLIDER AT 10500 FT AND WERE REQUIRED TO TAKE EVASIVE ACTION TO AVOID THE ACFT.

Narrative: APCHING COS, VECTORED OVER MEADOW LAKE ARPT WHERE GLIDER OPS WERE RPTED BY ATIS. I WARNED FO TO BE ALERT FOR GLIDERS DUE TO PRIOR SIGHTINGS. APCH CTL WAS BUSY WITH OTHER TFC -- 2 LIGHT ACFT IN OUR AREA (1 LNDG AND 1 XING APCH COURSE RWY 17L). I SPOTTED A YELLOW SAILPLANE AT 12 O'CLOCK POS, LESS THAN 1 MI, AND DIRECTED A L TURN. FO GOT A VISUAL AND STARTED L TURN. WE MISSED HIM BY APPROX 1000 FT HORIZ AND LESS THAN 200 FT VERT. APCH HAD NO RADAR TARGET. I SPOKE WITH A SUPVR AT COS TWR AND HE SAID THIS HAPPENS FREQUENTLY. THERE SHOULD BE AN ARR PUBLISHED THAT DOES NOT OVERFLY THIS ARPT.

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.