ATC Watcher:
Well if your info is correct that confirm us that there was not 900m vis.
Isn't the AB330 an Approach Category D airplane? I so, then minimums were DA of 4670 (352) and 1600 meters. Or, if the ALS were considered inoperative because of the temporary displaced threshold, then visibility minimum of 2000 meters.
As to whethter the APP type had nothing to do , well. we'll see but one has to remember the definition of RNP 0.3. . the GPS is not designed to align you with centre line and to maintain you there , but just to align you with the runway with a precision of 0.3 of a NM orv 500 meters.
Agreed. But, the airplane would only be off by .3 of a NM 5% of the time on a statistical basis. Usually, with autoflight connected the lateral displacement would be significantly less. Something that could easily be handled with visibility of 1600 meters.