Narrative:

En route to and descending to ffc, falcon field, peachtree city, in broken clouds with scattered clouds and buildups in area. Controller had previously cleared us for deviations due to WX and to descend to 4000 ft. While flying level at 4000 ft, I inadvertently entered a small cloud, very thin, and immediately hit severe turbulence sending me into 2000 FPM climb and to about a 60-70 degree bank and turning me to about 90 degree heading change. This was with no warning and very little turbulence except the violent climb and bank. I was very busy regaining control and stopping climb and leveling my wings. Just at the point where I was gaining control, controller said he had given me clearance to deviate but for nothing like that. I agreed, but informed him I could not gain control and report. He stated 'what if there had been traffic above.' I said 'I had to gain control and fly my plane.' I returned to 4000 ft and landed mins later at ffc. All of this took probably a min or two and all of our conversations were very cordial, except for concern of us both had there been other traffic close by. I don't think there was, as none was reported.

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Original NASA ASRS Text

Title: PA34 PLT TEMPORARILY LOSES CTL OF THE ACFT DUE TO TURB, RESULTING IN ALT AND HDG DEVS.

Narrative: ENRTE TO AND DSNDING TO FFC, FALCON FIELD, PEACHTREE CITY, IN BROKEN CLOUDS WITH SCATTERED CLOUDS AND BUILDUPS IN AREA. CTLR HAD PREVIOUSLY CLRED US FOR DEVS DUE TO WX AND TO DSND TO 4000 FT. WHILE FLYING LEVEL AT 4000 FT, I INADVERTENTLY ENTERED A SMALL CLOUD, VERY THIN, AND IMMEDIATELY HIT SEVERE TURB SENDING ME INTO 2000 FPM CLB AND TO ABOUT A 60-70 DEG BANK AND TURNING ME TO ABOUT 90 DEG HDG CHANGE. THIS WAS WITH NO WARNING AND VERY LITTLE TURB EXCEPT THE VIOLENT CLB AND BANK. I WAS VERY BUSY REGAINING CTL AND STOPPING CLB AND LEVELING MY WINGS. JUST AT THE POINT WHERE I WAS GAINING CTL, CTLR SAID HE HAD GIVEN ME CLRNC TO DEVIATE BUT FOR NOTHING LIKE THAT. I AGREED, BUT INFORMED HIM I COULD NOT GAIN CTL AND RPT. HE STATED 'WHAT IF THERE HAD BEEN TFC ABOVE.' I SAID 'I HAD TO GAIN CTL AND FLY MY PLANE.' I RETURNED TO 4000 FT AND LANDED MINS LATER AT FFC. ALL OF THIS TOOK PROBABLY A MIN OR TWO AND ALL OF OUR CONVERSATIONS WERE VERY CORDIAL, EXCEPT FOR CONCERN OF US BOTH HAD THERE BEEN OTHER TFC CLOSE BY. I DON'T THINK THERE WAS, AS NONE WAS RPTED.

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.