As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTING JFK, THE LEFT ENGINE GENERATOR FAILED FOLLOWED BY AN ACRID SMELL IN THE CABIN AND LAVATORY SMOKE DETECTORS SOUNDING. FLIGHT RETURNED TO JFK WHERE MAINTENANCE PERFORMED BITE ON BPCU AND FAULTED THE DP TRIP GENERATOR AND FDR. THE LEFT IDG WAS REPLACED AND THE SYSTEM OPERATION RETURNED TO NORMAL. (2010-D1303)(DL76G103021)