A four-engined jet could end up in the drink one day, too. B747 + Mount Pinatubo = quadruple engine failure.
Correction:
A four-engined jet could end up in the drink one day, too. B747 +
Mount Galunggung (Indonesia) = quadruple engine failure.
I understand a Manila based TNT owned Bae146 freighter operating Singapore to Manila entered volcanic ash from Pinatubo and came within 2,000 feet of ending up in the South China Sea, before they got some of the Lycoming ALF 502's turning and burning again.