As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"L ALPHA VANE" LIGHT ILLUMINATED WITH SWITCH IN ON POSN. C/B CONFIRMED IN. NOTE- AFTER SHUTDOWN AND CYCLING SWITCH, LIGHT REMAINED EXTINGUISHED WITH SWITCH IN "ON" POSITION. GROUNDED - YES. C/W B737-900 FIM 30-31 TASK 804 GROUND VERIFICATION CHECKED GOOD.