As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED. WHEN NR 1 LEFT FUEL PUMP WAS TURNED ON, FAULT INDICATED. MAINTENANCE FOUND PUSH BUTTON SWITCH (PBSW) 13QA WAS BAD AND REPLACED PBSW (13QA) PER ESPM 20-45-11. (SEE ALSO AALA201611149017 FOR PUMP AND AALA201703089015 FOR RELAY).