As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
U/D EXIT SIGN R/H FOUND WENT OFF IN LESS THAN 15 MINS, M5057 PWR SUPPLY BATTERY NEED REPLACEMENT.(<P>EMERGENCY BATTERY PWR SUPPLY ASSY M5057 REPLACED AND INSTALLATION TEST CARRIED OUT RESULT NORMAL IAW AMM 33-51-04 REV 104, 15MAR2022.</P>)