As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HELICOPTER LEFT A WARM HANGER ON A COLD MORNING , FLEW OUT TO JOBSITE, SAT FOR ABOUT 30 MINS IN 11 DEGREES F WEATHER, AND COLLECTIVE WOULD NOT GO UP FROM BOTTOM OF TRAVEL STOP. HEAT WAS APPLIED TO THE UNI-BALL PART OF SWASHPLATE AND COLLECTIVE WOULD OPERATE AS BEFORE. SO IT WAS DETERMINED THAT ID OF UNI-BALL MUST BE UNDERSIZE AND THE COLD TEMPS CAUSED IT TO SHRINK SLIGHTLY ONTO MAST.