As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 FUEL TANK AFT BOOST PUMP LOW PRESSURE LIGHT DOES NOT ILLUMINATE WHEN TURNED OFF LIGHTS, TESTS OK ON GROUND AFTER LANDING OPS NORMAL. CONFIRMED PROBLEM. REMOVED & REPLACED NR 1 TANK AFT LOW PRESSURE SWITCH S150 REF MM 28-42-11-000-801 & 28-42-11-420-801. OPS NORMAL PER SAME. GROUND VERIFICATION GOOD.