The story in the crew room is that alledgedly the pilot in his wisdom decided to use the fuel in his internal tanks first. Knowing that he could fly back to base with exactly the quanitity in the externals, the 'cunning plan' was hatched. The plan was to continue flying and about and fighting the aircraft without the distraction of thinking about fuel, when the internals were low the associated warnings would alert the pilot who would then switch to the externals and Foxtrot Ocscar. But the un-armoured externals were holed by locals taking potshots with the forced landing as a result.
I hope this is just bull and we find out that it was a simple case of engine failure. I find it hard to belive that any professional aviator would be so dumb, but these guys were working their nuts off and must have been exhausted after days of heavy and brave fighting. Whatever the outcome of the investigation my hat is off to all those who proved the Apache to be an awesome fighting machine again.