As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SPEED TRIM FAIL LIGHT LIGHT ON RECALL PRIOR TO DESCENT. RAN QRH, SUSPECT SINGLE CHANNEL FAULT. GROUNDED - YES. PERFORMED B737-9 IFIM TASK 22-11-00-810-D71 AND DFCS BITE B737-9 AMM 22-11-00-740-814. OPS CHECK NORMAL NO FAULTS NOTED. NO FAULTS ON RECALL.