As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE FIRE TEST FAIL, A LOOP TESTS PASS. B LOOP TEST ENGINE 2 OVERHEAT LIGHT STAYS ILLUMINATED ALL OTHER FUNCTIONS TESTED NORMAL. GROUNDED - YES. REMOVED AND REPLACED ENG/APU FIRE DETECTION MODULE IAW AMM 26-10-01-000-801 AND 26-10-01-400-801. OPERATIONAL CHECKS GOOD IAW AMM 26-11-00-710-801 AND 26-15-00-710-801.