As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT ENGINE FIRE-OVERHEAT DETECTION CARD FAULT OR FAILURE, OR AIMS LOSS OF ARINC 629 OR 429 COMMUNICATION WITH CARD. STATUS MSG01- ACTIVE CRUISE HARD; ENGINE FIRE DETECTION CARD (RT) HAS NO OUTPUT ON EFDC 429 BUS. SIGNAL GATEWAY (LT), RSCF MSG-2618892 ACTIVE ER HARD. REPLACE CARD FROM ANOTHER ACFT, FIRE SYS BACK TO NORMAL. (POWER SUPPLY LINEAR MONITOR UNIT).