As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS FAIL PREFLIGHT TEST. BATTERY WILL CHARGE AFTER ACCOMPLISHING QRH PROCEDURE BUT IS DEAD THE NEXT DAY AFTER AIRCRAFT IS PARKED OVERNIGHT. DUE TO THE EMERGENCY LIGHTS FAILING PREFLIGHT TEST ALL FOUR EMERGENCY LLGHT POWER SUPPLIES WERE REMOVED FROM SERVICE IAW THE AMM 33-50-05 REPLACEMENTS WERE INSTALLED, OPS TEST OF THE EMERGENCY LIGHTING SYSTEM WAS SATISFACTORY AT THIS TIME. NO OTHER DEFECTS WERE NOTED.