Thanks BOAC.
I did not mean to get so off thread with that, the reason I asked that specific question was that I understood that during a single-channel approach (which the Turkish crew were doing) there was no chance that the A/T would go into RETARD below 27' radalt because no autoland was taking place.
So, why would it ever go into RETARD when it got the duff gen from the radalt?
But if what you say is correct and a RETARD will take place anyway even during a single channel approach, it makes sense.