The helicopter seen in the crash scene is a Bell 407. However, the wreck is of an MBB Bo 105.
When the bear attacks people in the cave, at one moment we see the bear at the entrance in the cave filmed from outside and there is no sled there. Then after the bear has left, the sled appeared back, but the people have been inside, so nobody could bring it there.
Overgard hikes through the snow without snowshoes or skis. This would not be possible. Snow over such a distance would vary in density and your feet would sink. Also he wears no protective goggles or glasses, he would almost certainly get snow-blindness which would take days to recover from, effectively leading to his death.
The ID card found on the woman from the helicopter is in Thai only. A real Thai ID card is written in both English and Thai. Also, in Thai Spelling, when he writes the message on leaving the plane, the word just translates as "identity card", not a personal name.
The crashed Antonov AN-2 has a Czech tail number (OK-AGG) but a Polish inscription "Awaryjne Wyjscie" (Emergency exit).
(This is because the aircraft in question is PZL-Mielec An-2P, made in Poland)
(This is because the aircraft in question is PZL-Mielec An-2P, made in Poland)
Crashed plane registration (OK-AGG) points to an ancient Czechoslovakian biplane, Letov-Farman F.62 Goliath - while the actual plane shown in movie was Antonov An-2.
38:14 and 39:00 he writes heading to the north but when he goes walking he walks in to the direction of the sun according to the shadows, which is to the south.
Both aircraft would be fitted with EPIRB either triggered by g-forces or manually.
At 1:23:09 you see a building in the near distance.