B48N:-
Narssarssuaq ( sp.? )
It's spelt Bluie West One if you are a fan of Ernest K Gann.
Couldn't possibly be my ex FO Hastings Nav who retired as a Gp Capt, or I'd
surely have heard about it. The arcane practices of Navs became even more arcane in those northerly latitudes, but mine always got me to the other side of the pond without incident, for which I give (and gave!) much thanks.