Grizzly 2 experienced temperatures as low as -21ºC as it underwent tests on its powerplants. It was accompanied by an Airbus A340-300 carrying support equipment and the test team.
It will experience further cold weather testing in Kiruna and at other locations this winter and next says Airbus Military.
Airbus Military A400M begins cold weather trials in Sweden
& for those who like detail
http://www.flightglobal.com/blogs/ai...03-114186.html