As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:N/AAIR TURN BACK - ON TAKE OFF ROLL THRU 10,000 FT AIRCRAFT HAD A SEVERE SHAKING IN YOKE AND RUDDER ALL ECAM INDICATIONS NORMALISOLATED TO CAPTAINS STICK SHAKER WHEN PULL CAPTAINS STICK SHAKER CB THE SHAKING GOES AWAY & WHEN RESET SHAKING COMES BACK MM 0558800 1-8-20/ REF ITEM #2 L/P 353197 R/R OF #1 FMC CK STICK SHACKES ON GROUND GROUND CK NORMAL IAW MM 31 53 34 OK FOR SERVICE EFF SOURCE REF IPC 31 53 08 03 FOR SERVICE