As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS ASSOCIATED WITH M1671 GO OUT AFTER 2 MINUTES EMERGENCY LIGHTS ASSOCIATED WITH M1671 GO OUT AFTER 2 MINUTES.<[01] REPLACED M1671 BATTERY AND TESTED PER AMM 33-51-06-960-805; NO DEFECTS NOTED.;[02] SIGNED FOR PART INSTALLATION.;[03] VERIFIED CORRECTIVE ACTION 1