When returning from holiday, one starts to think of holidays

[fivemack]

By 'south of the Rio Grande', I mean 'into Mexico' rather than 'anywhere south of 31N' - I thought this was standard usage, but various of my friends in Cambridge interpreted it the other way.

[Poll #1545665]

Comments

[gnimmel.livejournal.com]

There are also regulations that limit how far South you can fly - aircraft have to remain within some amount of flight time from an airport that they can land at in case of engine failure/medical emergency/etc., and Antarctica doesn't have airports (aside from ice runways which specially-equipped planes can land on, AFAICR). The trouble is that the Southern oceans are also not very well equipped with runway. There are a few on islands, I think.