Narrative:

Departed cvg, runway 27, whitewater departure. ATC advised of and we encountered moderate turbulence climbing out of FL210. ATC had us level off FL240 for traffic. Moderate turbulence was being reported up to FL310 and we were still in it. Traffic appeared on TCASII at approximately 10-11 O'clock position at 1000 ft above us. Noticed separation decrease to +400 ft then +800 ft. TCASII gave us a TA followed by an RA to descend. Followed TCASII and descended approximately 300-400 ft and advised ATC. ATC contacted other aircraft and he explained that he had encountered enough turbulence to cause the altitude deviation. We saw the aircraft pass overhead (we were between cloud layers at the time). I don't believe that loss of separation was less than 700-800 ft.

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Original NASA ASRS Text

Title: B737-800 FLT CREW, DURING TURB, EXPERIENCES A TCASII RA ON CLB.

Narrative: DEPARTED CVG, RWY 27, WHITEWATER DEP. ATC ADVISED OF AND WE ENCOUNTERED MODERATE TURB CLBING OUT OF FL210. ATC HAD US LEVEL OFF FL240 FOR TFC. MODERATE TURB WAS BEING RPTED UP TO FL310 AND WE WERE STILL IN IT. TFC APPEARED ON TCASII AT APPROX 10-11 O'CLOCK POS AT 1000 FT ABOVE US. NOTICED SEPARATION DECREASE TO +400 FT THEN +800 FT. TCASII GAVE US A TA FOLLOWED BY AN RA TO DSND. FOLLOWED TCASII AND DSNDED APPROX 300-400 FT AND ADVISED ATC. ATC CONTACTED OTHER ACFT AND HE EXPLAINED THAT HE HAD ENCOUNTERED ENOUGH TURB TO CAUSE THE ALTDEV. WE SAW THE ACFT PASS OVERHEAD (WE WERE BTWN CLOUD LAYERS AT THE TIME). I DON'T BELIEVE THAT LOSS OF SEPARATION WAS LESS THAN 700-800 FT.

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.