Narrative:

During climb I was using more right aileron than normal. At 9000 ft we felt some uncommanded rudder input to the left. We had no control problems. Climb and cruise were normal. During climb and cruise my first officer and I talked about what we felt and put the information in the logbook. During descent I was using more right aileron again, so as a precaution we went to the book and followed all procedures (abnormal) and declared an emergency. We made a normal landing with the rudder in manual per procedure. Company maintenance grabbed the logbook before I could add more information and did not debrief us.

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Original NASA ASRS Text

Title: UNCOMMANDED RUDDER INPUTS ON AN MD80.

Narrative: DURING CLB I WAS USING MORE R AILERON THAN NORMAL. AT 9000 FT WE FELT SOME UNCOMMANDED RUDDER INPUT TO THE L. WE HAD NO CTL PROBS. CLB AND CRUISE WERE NORMAL. DURING CLB AND CRUISE MY FO AND I TALKED ABOUT WHAT WE FELT AND PUT THE INFO IN THE LOGBOOK. DURING DSCNT I WAS USING MORE R AILERON AGAIN, SO AS A PRECAUTION WE WENT TO THE BOOK AND FOLLOWED ALL PROCS (ABNORMAL) AND DECLARED AN EMER. WE MADE A NORMAL LNDG WITH THE RUDDER IN MANUAL PER PROC. COMPANY MAINT GRABBED THE LOGBOOK BEFORE I COULD ADD MORE INFO AND DID NOT DEBRIEF US.

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.