rudderrudderrat:
On TriStars - it was quoted as being acceptable if ILS QDM was within 6 degs of Runway QDM - but I cannot find any Airbus equivalent limit published.
Where was this quoted? It certainly wasn't a procedure at my airline. Rather, an autoland below specified visibility minimums was limited to a crosswind component of 10 knots. That took care of things nicely without having to observe a compass heading that might not be all that accurate.
I did quite a few 1011 autolands in clear weather with a 25 knot crosswind. It did just fine. But, the margins in that strong of a wind were outside the statistical envelope for a low-visibility autoland, one where the runway might not be seen until after the main landing gear had touched down.