BOAC
Your Post 4881
"I understand the planner to have been an RN Pilot. Was he ever interviewed by the Board?"
That clearly indicates to me, and I expect to others, that you have not actually read the BOI, nor these threads which stretch back some eight years.
Do you not think it would be sensible to rectify that omission before leaping in and pontificating on possible factors bearing on the tragedy? With nearly a decade of discussion to digest you may just find the answers you seek.
Enter the Archives and select "Chinook - Hit Back Here".