So I'm sitting here in lovely GUW (current temperature -18c/0f) with a growing amount of colleagues piling up as KC is refusing to fly into an airport (URA got hit as well) when the pressure is above 1050 millibar/hectopascal. Currently the pressure is sitting at 1051 millibar, so I guess they aren't getting out today either.

SU is still flying and both fly A320 series aircraft into the airport.

Explanations that I have heard include that it's an issue with the altimeter configuration due to being below sea level, or that it's to do with the altimeter calibration not being certified above 150 millibar. Has anyone heard of if this is a standard limit on aircraft because I don't think I've ever heard of a shutdown for this before.

Link to story on this if anyone is interested.