As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHEN CONTROL YOKE U WAS REMOVED FROM THE ACFT FOR REPAIRS TO SUPPORT STRUCTURE A CRACK WAS FOUND ON BOTH TOP AND BOTTOM SIDES OF CO-PILOT CONTROL YOKE UNIVERSAL JOINT STARTING FROM THE BOLT HOLES AND PROGRESSING TO THE AFT END OF THE U-JOINT. THESE CRACKS WERE UNDETECTABLE WITHOUT THE REMOVAL OF THE CONTROL YOKES FROM THE U-JOINTS.