If I buy a printed 2025 FAR/AIM, that is already available, am I able to use it in a checkride in 2024? Or are you only supposed to use the current year. Thanks.
Others have alluded to this, but it's important to realize that the "FAR/AIM" book that you buy from Sporty's or wherever is just a reprint of the existing AIM and the FARs that the company feels pertain to most pilots. The book is not published by the government and is in no way "official". And it certainly doesn't contain all the FARs (for example, the ASA FAR/AIM doesn't include Parts 121 and 135, whereas the FAR-FC version does - but doesn't include Part 61).
The AIM routinely get updated, and it's not on any kind of schedule that matches the printing dates of the books. The only true up to date source is
https://www.faa.gov/air_traffic/publications/atpubs/aim_html/ - and various EFBs/apps that pull directly from that site. Any printed version is very possibly already outdated by the time it's printed. Note that in the AIM on that website, the "explanation of changes" page lists the most recent change was Sep 5, 2024 - so, 12 days ago. Now, the printed copies typically do have a URL where you can see the changes, and you do need to make sure you do that.
Same for the FARs. Changes to the FARs are made whenever the federal rulemaking process runs its course. There is no real schedule for this. The official site for these is
https://www.ecfr.gov/ , which is the same website for CFRs on any government regulation. If you select Title 14, it indicates that there were changes made on 9/9/24 and 9/10/24.
So you can see by this that if you were to buy a "2025" FAR/AIM, it's already out of date. In fact, the use of "2025" by ASA or Gleim or whoever is really just a marketing ploy. There IS NO "2024" or "2025" FAR/AIM, there is just whatever was current as of the printing deadline. So whether to buy a 2024 or 2025 version for a checkride isn't really relevant. Certainly, if you are going to be buying a printed copy, you should buy the most current version available - BUT that's really just because there will be fewer recent changes for you to go through and see if any apply to what you're studying (and marking up the book as appropriate). If you already have a "2024" version, though, there's not much reason to buy a 2025 version - assuming you do go ahead and mark up any changes (which I do think would impress a DPE more than just having a shiny new book with 2025 on it).