Narrative:

During cruise flight at FL280; lost all electrical power to right side of aircraft. Appeared to be a generator loss. Left side electrical picked up load and APU was started to back up electrical. This was an ETOPS flight. Company was notified; and per maintenance and dispatch; it was determined that a return to ZZZ with an overweight landing would be made. All checklists were completed; and the flight attendants and passenger were briefed. The overweight checklist was completed and a return to ZZZ was made. A 'normal' overweight landing without any problem was made; and a normal taxi in to the gate was completed. Logbook entries were completed and the aircraft was turned over to maintenance for repair. All elements of the overweight landing were reported to company and maintenance.

Related reports:

Google
 

Original NASA ASRS Text

Title: A B757 FLT CREW ON AN ETOPS FLT EXPERIENCED LOSS OF A GENERATOR AND ALL RIGHT SIDE ELECTRICAL COMPONENTS. THEY RETURNED TO THEIR DEP ARPT AND LANDED OVERWEIGHT.

Narrative: DURING CRUISE FLT AT FL280; LOST ALL ELECTRICAL PWR TO R SIDE OF ACFT. APPEARED TO BE A GENERATOR LOSS. L SIDE ELECTRICAL PICKED UP LOAD AND APU WAS STARTED TO BACK UP ELECTRICAL. THIS WAS AN ETOPS FLT. COMPANY WAS NOTIFIED; AND PER MAINT AND DISPATCH; IT WAS DETERMINED THAT A RETURN TO ZZZ WITH AN OVERWT LNDG WOULD BE MADE. ALL CHKLISTS WERE COMPLETED; AND THE FLT ATTENDANTS AND PAX WERE BRIEFED. THE OVERWT CHKLIST WAS COMPLETED AND A RETURN TO ZZZ WAS MADE. A 'NORMAL' OVERWT LNDG WITHOUT ANY PROB WAS MADE; AND A NORMAL TAXI IN TO THE GATE WAS COMPLETED. LOGBOOK ENTRIES WERE COMPLETED AND THE ACFT WAS TURNED OVER TO MAINT FOR REPAIR. ALL ELEMENTS OF THE OVERWT LNDG WERE RPTED TO COMPANY AND MAINT.

Data retrieved from NASA's ASRS site as of May 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.