As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ROC - MAINTENANCE FOUND THE EMERGENCY EXIT SIGNS IN THE MID CABIN AND OVER THE LEFT OVERWING HATCH FAIL AFTER 5-10 SECONDS OF OPERATION. MAINTENANCE REMOVED AND REPLACED THE BATTERY PACK IN POWER SUPPLY M1134. OPERATIONAL CHECK GOOD. (M)