The FD bars will retract at 50 ' so you won't be able to do a cat 3 manual app.But BIZ is right,the head up display installed on the 737 or Saab 2000 is certified for manual cat 3a operations.
But this was not the case for my initial question.
Satis ; the ng can be passive or fail operational,depending on configuration demanded by the operator.
And i think I can assure you that no profesional pilot will confuse a/c type with app type.
Noac :indeed .one problem can be at DH,when you lift your eyes from the instruments to look outside,you can have some dificulties to accomodate .