Narrative:

Approximately 2 hours into the flight an uncommanded rudder jolt/yaw was felt and lasted for a second or two. No indication on ECAM or rudder displacement. Autoplt number 2 was engaged and stayed engaged. There was no further indications or movement. The first officer and I discussed further options but the aircraft responded normally. The FL310 was smooth, no traffic, no clear air turbulence. Mach 0.80. Callback conversation with reporter revealed the following information: the reporter stated the immediate maintenance action was unknown but the aircraft history was followed and had repeated flight control reports entered in the log after this incident. The reporter said the airplane was taken to the air carrier overhaul base where a wiring problem was discovered and corrected.

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Original NASA ASRS Text

Title: AN AIRBUS 300 IN CRUISE AT FL330 EXPERIENCED AN UNCOMMANDED RUDDER JOLT/YAW LASTING FOR A SECOND OR TWO. AUTOPLT NUMBER 2 ENGAGED AND DID NOT DISENGAGE.

Narrative: APPROX 2 HRS INTO THE FLT AN UNCOMMANDED RUDDER JOLT/YAW WAS FELT AND LASTED FOR A SECOND OR TWO. NO INDICATION ON ECAM OR RUDDER DISPLACEMENT. AUTOPLT NUMBER 2 WAS ENGAGED AND STAYED ENGAGED. THERE WAS NO FURTHER INDICATIONS OR MOVEMENT. THE FO AND I DISCUSSED FURTHER OPTIONS BUT THE ACFT RESPONDED NORMALLY. THE FL310 WAS SMOOTH, NO TFC, NO CLEAR AIR TURB. MACH 0.80. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE IMMEDIATE MAINT ACTION WAS UNKNOWN BUT THE ACFT HISTORY WAS FOLLOWED AND HAD REPEATED FLT CTL RPTS ENTERED IN THE LOG AFTER THIS INCIDENT. THE RPTR SAID THE AIRPLANE WAS TAKEN TO THE ACR OVERHAUL BASE WHERE A WIRING PROB WAS DISCOVERED AND CORRECTED.

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.