As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON RECALL FLT CONTINUED AND SPEED TRIM FAIL LIGHT ILLUMINATE. AUTOPILOTS A AND B WILL NOT ENGAGE. ACFT GROUNDED. MOVED A/P STABILIZER TRIM CUTOUT SWITCH TO NORMAL. PERFORMED DFCS BITE REF FIM TASK 22-11, TASK 801. TEST PASSED. NO FURTHER FAULTS FOUND.