Last time I was on a Tri-motor, I recall the seats were forward facing. Something to do with, er what was it now, ah yes, COST
When the originals were converted, they could not afford rear seats, and used the excuse of the angle of the floor being wrong in the cruise.
It's been a long time since I flew in one, so Guv, are you suggesting that safety has over ridden accountants for once, and rear facing seats are now fitted???
We fought and lost for rear facing seats to be fitted in our new aircraft, but they have agreed to 4 point harnesses.