As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: EMERGENCY LIGHTS ARE INOP. WHEN USED TO BACK UP, LOSS OF EXTERNAL BOTH PRI AND SEC. ALSO, BAT MIGHT BE LOW OR DEAD. PLUS, THE IRU BAT MIGHT BE DEAD. MAINTENANCE PERFORMED FIM TASK 33-51-00-810-803 FOUND FAULT TO BE INTERMITTENT OPS CHECK GOOD IAW AMM 33-51-00 NO FAULTS NOTED.