As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
POST FLIGHT CHECK FOUND EMERGENCY POWER TEST FAIL. DURING T-S FOUND FAULTED BATTERY CHARGER. REPLACED BATTERY CHARGER PER AMM 24-34-03-4 AND FOR PRECAUTIONARY, REPLACED BOTH MAIN BATTERIES PER AMM 24-34-02-4, ALL CHECK SATISFACTORY. SET ELECTRONIC CHRONOMETER PER AMM 31-21-02-5. A/C OK FOR SERVICE.