As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SPEED TRIM FAIL ON DESCENT. GROUNDED - YES. FCC-B LOGGED MSG 22-11186.TRIM CMD RESPONSE MONITOR. COULD NOT DUPLICATE MALFUNCTION. ACCOMPLISHED SPEED TRIM GROUP #20 BITE. NO DEFECTS NOTED. MEETS CRITERIA OF NUISANCE FAULT. REF B737-9 IFIM 22-11-00-810-C61.