Narrative:

We were heading 360 degrees on a downwind for runway 18L descending to 5000 ft. At about 6000 ft we began to encounter moderate turbulence associated with a rainshower ahead and the captain turned right heading 040 degrees and leveled off at 6000 ft to avoid the turbulence. I immediately told ATC we needed heading 040 degrees for turbulence. The controller responded turn left now heading 350 degrees and we did so. The controller apparently was worried about us crossing the final approach path for runway 18. After landing we were advised to call the tower and did so.

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Original NASA ASRS Text

Title: COMMUTER SMT TAKES EVASIVE ACTION TO AVOID TURB AND RAIN SHOWER AND IS IMMEDIATELY VECTORED BACK ON COURSE.

Narrative: WE WERE HDG 360 DEGS ON A DOWNWIND FOR RWY 18L DSNDING TO 5000 FT. AT ABOUT 6000 FT WE BEGAN TO ENCOUNTER MODERATE TURB ASSOCIATED WITH A RAINSHOWER AHEAD AND THE CAPT TURNED R HDG 040 DEGS AND LEVELED OFF AT 6000 FT TO AVOID THE TURB. I IMMEDIATELY TOLD ATC WE NEEDED HDG 040 DEGS FOR TURB. THE CTLR RESPONDED TURN L NOW HDG 350 DEGS AND WE DID SO. THE CTLR APPARENTLY WAS WORRIED ABOUT US XING THE FINAL APCH PATH FOR RWY 18. AFTER LNDG WE WERE ADVISED TO CALL THE TWR AND DID SO.

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.