As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENG START SELECTED GEN 1 & GEN 2 HEARD LOUD BANG FOLLOWED BY AC 2 AUTO TRANSFER & AUTO TRANSFER FAIL CAUTION MSG. BURNING ODOR NOTED AFTER FAULT. COMPLIED WITH SEVERAL GEN TRANSFER CYCLES IAW AMM 24-20-00 NO DEFECTS NOTED. ALL TRANSFERS SMOOTH NO ODOR AROUND, OK FOR SERVICE.