The stock Gibralter (LXGB) is located in this file:Flight Simulator 9\Scenery\Afri\scenery\AP946190.BGLIf restoring, you may wish to also restore all files in that subfolder which have the same number but a different letter prefix - example FL946190.BGLGood luck! TIP: To locate any default airport's file, just open the airport (using the ICAO code) in AFCAD and select properties. The complete path to the file name is displayed at the bottom of the properties screen. Remember however that many stock airports are stored in each APXXXXXX.BGL file - not just one.