As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING AIRFRAME 1200 HR INSPECTION, ENG CONTROL TWIST GRIP LOAD COULD NOT BE ADJUSTED DUE TO OUTSIDE TIGHTENER SPRING NOTCH WAS OUT OF THE RECEIVER, INSIDE THE TWIST BOX ASSEMBLY. THIS LEADS TO THE TWIST GRIP LOAD COULD NOT BE TIGHTENED IAW MM SINCE THE TIGHTENER SPRING WAS FREE ROTATE INSIDE THE BOX ASSEMBLY.