A320 Autoland light
Apologies for dredging up an old thread - my question is slightly different but still relates to autoland on the 320.
If landing in CAT1 (or better) conditions with a CAT1 MDA which is based on baro altimeter will the red autoland light come at MDA -100ft on if you attempt to do an autoland? No system / signal failures, just minima set as MDA rather than DH.
On the aircraft of the people I used to work for this would invariably happen, and SOP to carry out an automatic landing off a CAT1 approach was to delete the MDA and change it to DH100 when visual with the runway.
Just did an autoland with the new company on similarly aged/equipped 320s and we happily landed with the MDA set all the way.
Very confused now. Did the old operator fiddle with something in the software to bring up the light, do IAE and CFM busses (both Thales v3 equipped) behave differently or am I going mad?
S.