To see if your airport is indeed included in SimPlates, please see the list of covered airports in SimPlates.
The number of airports in Safelog is absolutely massive - far more than any similar or competing product. However, it is not universal. If your favorite airport is not covered or if we don't happen to have any / all / current / some particular plate for some particular airport, please accept our apologies.
To see which plates we have in SimPlates for a given airport, please visit www.PilotNav.com and find the listing for your airport. The list of plates found on PilotNav listings will normally be the same as those in SimPlates.