Thanks for the info Musician but I am really confused by the FMCs in the Airbus.
Seems like a very complicated system just to have some sort of VPATH during an approach. It reminds me of the Air France A320 crash during an approach in France near Strasbourg IIRC... tell me it wasn't the same type of error here?
Maybe the TSB is convinced that both pilots saw the approach lights but I remain a skeptic especially if the graph provided slast is correct in its time lines.
Does anyone with Airbus 320 experience know what the minimum altitude for autopilot use (AFM limitation) is on this type of approach (non precision) for the A320?