Regarding operations at BGSF:
The llz/dme app is done mostly straight-in (95% of the time) since the wind is prevailing outflow from the ice-cap(easterly). And most of the time (approx 90 %) you take off with a tailwind due to higher terrain to the east (rwy 10/28). the runway lenght is 2815 meter / 9235 feet! and the RFF is cat 5, cat 8 with PN 4Hr. And yes they have been landing the Concorde here the last summers. BGSF is the best alternate in whole Greenland and is only down for maybe 5 days a year! CYFB is worse!
BGSF does not have a full hospital. They only have one nurse!
There is an other airport further south, BGBW. This one is 1830 meters / 6000 feet, but that's another story!! Only ndb/dme app with high terrain. Still alot of ferry pilots use it.
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40 knot x-wind on 799 meters on an average day!