Complete undercarriage failure ("belly landing") is very rare in large passenger aircraft, but not unprecedented.

767 Belly Landing (source)

I would imagine it would be fairly easy to predict which part of the fuselage and engines would be in contact with the runway in such a situation. Are airliner fuselages and / or engines designed for this eventuality, so that the event is more likely to be survivable? Or is it considered too rare for structural modifications to be cost-effective?

  • $\begingroup$ Note: planes are designed to safely "land on water", which requires a similar design. And IIRC modern aircraft must have detachable engines (in case of heavy contact to the ground). And aircraft are designed for evacuation of passengers. (for sure not only a soft landing with fire on lavatory) $\endgroup$ Commented Jan 16, 2023 at 15:51


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