Narrative:

Climbing through FL230; the aircraft experienced moderate to severe vibrations followed by an audible bang. The relief pilot announced 'engine failure.' I looked at the engine instruments and noted the egt in red indicating 700 degrees with minimal N1 and N2 rotation.the captain compensated for the loss of thrust with coordinated rudder and aileron. The captain then delegated crew duties and the relief pilot and I secured the engine via the engine severe damage separation checklist in the QRH.the captain handed the aircraft and ATC communications over to me; while he and the relief pilot contacted dispatch; coordinated with flight attendants; and formulated a plan for a return to a nearby airport.after getting a briefing from dispatch; it was determined that ZZZZ was the nearest suitable airport. We proceeded direct to ZZZZ. ATC allowed us to make a straight-in ILS approach. A normal 3-engine approach and landing was made by the captain.after exiting the runway; local arff crews checked for an engine and/or brake fire. There were none.normal shutdown and securing procedures were preformed. Maintenance was notified of the technical problem. The captain spoke with local authorities and the chief pilot.overall the engine problem was a non-event. I believe we handled the problem professionally and in accordance with company procedures. We debriefed and critiqued our performance and decided we handled the engine failure like we practiced in the simulator during training events.

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Original NASA ASRS Text

Title: B747 pilots and flight attendants reported their perspective of an engine failure climbing through FL230. Flight returned to the departure airport.

Narrative: Climbing through FL230; the aircraft experienced moderate to severe vibrations followed by an audible bang. The relief pilot announced 'engine failure.' I looked at the engine instruments and noted the EGT in red indicating 700 degrees with minimal N1 and N2 rotation.The captain compensated for the loss of thrust with coordinated rudder and aileron. The captain then delegated crew duties and the relief pilot and I secured the engine via the Engine Severe Damage Separation checklist in the QRH.The captain handed the aircraft and ATC communications over to me; while he and the relief pilot contacted dispatch; coordinated with flight attendants; and formulated a plan for a return to a nearby airport.After getting a briefing from dispatch; it was determined that ZZZZ was the nearest suitable airport. We proceeded direct to ZZZZ. ATC allowed us to make a straight-in ILS approach. A normal 3-engine approach and landing was made by the captain.After exiting the runway; local ARFF crews checked for an engine and/or brake fire. There were none.Normal shutdown and securing procedures were preformed. Maintenance was notified of the technical problem. The captain spoke with local authorities and the Chief Pilot.Overall the engine problem was a non-event. I believe we handled the problem professionally and in accordance with Company procedures. We debriefed and critiqued our performance and decided we handled the engine failure like we practiced in the simulator during training events.

Data retrieved from NASA's ASRS site 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.