Desert185
Agreed, I cannot make an argument that tris and quads are statistically safer (there isn't one), but they do offer more options and possibilities. One of which has been, and should remain, operations beyond any enroute alternate airports. Yes, trans-polar flights can be done in either plane, but I'd much rather shutdown an engine at 90N and be able to continue into Fairbanks than do so and be forced into Thule or Barrow or a Russian airport in winter.
GF