Originally Posted by
Traffic_Is_Er_Was
Looking at the in chopper footage again, it doesn't appear that the pilot is particularly looking anywhere but outside. It's not like his attention is attracted to a particular instrument, and then he reacts by looking in the threat direction. He seems oblivious up to the moment of impact.
The collision threat is always the hardest to see as it won't have any relative motion, it will appear stationary to the target until the collision. The brain will pick up movement in the periphery relatively easily, to pick up collision course objects your scan needs to sweep the danger areas with periodic focus as you sweep. The helo pilot may have been alerted to something in that direction, but may not have considered it an immediate danger, just something being pointed out.