Lagoa de Obidos ULM Airfield V1. This scenery is ONLY compatible with Portugal Terrain from PTSIM (http. www. ptsim. com) and is based on digital pictures taken at the place, accurate real measures by Aerodromos de Portugal (http. www. pelicano. com. pt zmapa. html). Although certified for ULM, this airfield have no ICAO so I gave it the fake LPOB Freeware. For Microsoft FS2004. NOT tested for FSX. By Joao Ferreira.