Danish accident report concludes that
The Board is of the opinion that in the flight plan was not taken sufficient account of the headwind information that was available.
It says that the planned flight was to have been 4:10, yet they were reporting fuel shortage after only 3 hours and engine stopped after less than 4 hours. Now, I can understand why the wind slowed them, but why did it take away from their endurance? Answers on a postcard?
quote courtesy of google translation