As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER PRESSING RECALL THE SPEED TRIM FAIL LIGHT ILLUMINATED THE LIGHT EXTINGUISHED WITH THE MASTER CAUTION RESET. GROUNDED - YES. ACCOMPLISHED B737-9 IFIM TASK 22-11-00-810-D71 AND IFIM TASK 22-11-00-810-C61 ALSO ACCOMPLISHED DFCS BITE LIBRARY TEST. ALL TESTS PASSED.