What was found
PITCH TRIM FROZEN IN FLIGHT. ON CLIMBOUT FROM MINNEAPOLIS 10 DEG CELSIUS APPROX AUTOPILOT BEGAN 300-500 FT +- PITCH EXCURSIONS. UPON DESCENT, PITCH TRIM BEGAN WORKING WHEN IOAT ABOVE 0 DEGREE. ITEM IS UNDER INVESTIGATION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PITCH TRIM FROZEN IN FLIGHT. ON CLIMBOUT FROM MINNEAPOLIS 10 DEG CELSIUS APPROX AUTOPILOT BEGAN 300-500 FT +- PITCH EXCURSIONS. UPON DESCENT, PITCH TRIM BEGAN WORKING WHEN IOAT ABOVE 0 DEGREE. ITEM IS UNDER INVESTIGATION.