As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STAB TRIM PROBLEM, RTFL. AFTER TAKEOFF STAB TRIM INOP IN NOSE DOWN POS. RMV COLUMN SWITCH MODULE M1201, FOUND PUSHED BACK PIN ON K4 B2. NEED TO CONTINUE T/S AFTER RPL OF M1201. REPLACED COLUMN CUTOUT SWITCH MODULE. ALSO REPLACED S115 NOSEUP LIMIT SWITCH. CHECK GOOD NS UP, NS DOWN. TEST FLT FOR STAB TRIM ALL CHECKS SATISFACTORY.