bobtait wrote: Not that I've ever heard of. Recent changes are indicated by a line in the margin beside the text, but I don't know of any service that gives you notice of changes before publication. The recent extensive changes to references in the AIP came as a complete surprise to every one. It's worth remembering that CASA do not have any control over the AIP, that's Air Services department. The recent AIP changes to references came as a surprise to CASA as well.