As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BUSS R EMERGERNY AC OFF LEVEL 1 WARNING WITH ASSOCIATED LOSS OF SYSTEMS IN FLIGHT. EMERGENCY DECLARED. R & R RT EMERGENCY AC BUSS FEED RCCB IAW AMM 24-50-01-000-803 & 400-803. OPS TESTED IAW 24-50-01-700-802 & 01-700-802 B138. OPS CHECKED GOOD.