As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DECENT INTO MSP, NWS DIM FAIL LIGHT ILLUMINATED. SEL OVRD AND ENGINE #2 LOOP FAULT ILLUMINATED SE LOOP B AND LIGHT WENT OUT. MAINTENANCE REPLACED #2 ENGINE ZONE 1 FIRE LOOP PN 3101-08 IAW AMM 26-11-11 OPS CHECK GOOD PERFORMED OPS CHECK OF NWS IAW AMM CHAP 31 OPS CHECK GOOD, COULD NOT DUPLICATED PROBLEM.