I can’t speak about airports per se, but the plain-vanilla terrain, mapping, and scenery data that Bing gets borders on Paleozoic at times.
Case in point:
My “home airfield” while in Russia is Ostafyavo, (UUMO) and the local terrain and scenery shows roads that are just beginning construction, (the initial cuts and fills), that were actually finished over ten years ago and have been in active use since then.
I would not be surprised if airport data is similarly dated, at least in some cases with remote airfields.