When I last went through the Boscombe Training Course, I believe the cards had to show a brace possition, but there was not an official position as such, and comparing cards from different airlines and aircraft, all showed different positions.
There was a very strong argument put forward after work done by the RAF Institute of Aviation Medicine at Farnborough after the Kegworth crash, to standardise the position. This modified position was adopted by many airlines (after a fashion), but I was not aware of this being a formal one imposed by the CAA, unless any one out there knows different??
Mind you, the problem could easily be solved with rear facing seats, but that costs money doesn't it!
