Airbus: Flying an ILS not in the database
New airbus pilot here, and new to FMS operated aircraft. For landing we put a hell of a lot of info into the box for an approach, QNH, temp, winds, minima, G/A alts, not to mention properly sequencing to the correct airfield and approach.
Now suppose we arrive at an airfield for whatever reason and are forced into landing and it is not in the database and there is not enough time or info to build it using Pilot RWY. What do we do? how would the aircraft behave? I know that we can simply insert an ILS frequency and course into the RAD NAV page manually and work out approach speeds based on our current weight, but what about approach mode, what if the FMS has another airfield programmed in the box. Would the aircraft detect that we are not at the right airport? Would we have to switch off the GPWS warnings? Lots to consider, is there a procedure anywhere for this? Thanks