My understanding is that the AIP is just licensed airfields whereas Pooleys etc contain not only these but also a multitude of unlicensed fields. If you are worried about the data being out of date then many popular airfields will have a website with up to date airfield information on or at least a phone number for PPR.
For any destination my habit is to check ALL sources of information including the AIP if relevant and clear up any contradictions with a phone call if possible.
Last edited by Beethoven; 3rd Oct 2012 at 05:37.