As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: WHILE TROUBLESHOOTING L.P. 1564962 FOUND OVERHEAD EXIT SIGNS BETWEEN WING EMERGENCY EXITS BOTH HAVE COMBINED 6 BULBS BURNED OUT. MAINTENANCE RELAMPED BURNED OUT BULBS ON THE FRONT AND BACK SIDE OVERHEAD EXIT SIGNS BETWEEN THE WING EMERGENCY EXITS . OPS TEST GOOD PER AMM 31-51-00-710-805A.