NOT 'Sole Survivor' or a Twighlight Zone episode ;)
It concerns a group of airmen and a crashed plane in the desert. The twist in the story is that we, (and indeed, they), don't realise they are dead until they disappear one by one as their remains are found. I think there is one 'ghost' left at the end of the film, as his body is not discovered. Almost certain it was filmed in black and white. Anyone help?
Tried a search and all I can find are the two that you mentioned (Sole Survivor and King Nine will not return). There is talk that Sole Survivor may have been re-edited for TV, but not sure on that.