The lcac.zip file you have requested: Skins / Ground Vehicles / Sea / LCAC - 5.26mb is not available. Perhaps try browsing all files for the game Flight Simulator X and upload any files you want to share or are missing. This is the only information we could locate:
For more information on Flight Simulator X, visit Flightsim.filefront.com This is a LCAC for FSX. It includes animated ramps, props, rudders, and thrust nozzles. It is amphibous but requires landing gear on land. There is also a 2d radar panel for FSX.