I initiated this original post under the title

Excellent work Sherlock(s)! Interesting isn't it, when a few people from different locales can band together via a forum despite great distances and solve a problem that seems to be plaguing many.Congratulations Nigel!It will also be interesting to see how many of these other Afcad anomalies are similarily identified.

This is extremely helpful. I've been through just about every CTD fix I've encountered here in the forums. I've managed to reduce the number of CTDs a lot, but there are still a couple of problem airports, one being Congonhas in Fly to Brazil # 6. This may explain it.Lee